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3D Printing & CNC Laws

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NewestSaved 2026-10-26 18:01Permalink ↗

Date saved: 2026-10-26 18:01 (PDT)

Sources: Tom's Hardware, Yahoo News, California Senate, Planet 3DP, Congress.gov, Fabbaloo, TechRadar, Newsweek

Key findings

California AB 2047: the new firearm-blocking requirement

Tom's Hardware / Jowi Morales (October 2, 2026): California Governor Gavin Newsom signed a bill requiring 3D printer manufacturers to include firearm-blocking technology in their products once an industry standard is published by ASTM International, making California the second state to enact firearm restrictions on 3D printers following New York; the law only affects 3D printers that have yet to be sold, so existing 3D printers do not need to be retrofitted; it regulates the sale and transfer of 3D printers, not their ownership or use; the law mandates the California DOJ to check for an ASTM standard quarterly, starting no later than July 1, 2027, until July 1, 2029; if no standard is published by then, the DOJ is no longer required to check for one, meaning the process to write the guidelines manufacturers need to follow to sell 3D printers in California might not even begin; two primary detection methods exist - matching against a known database of gun files or analyzing by a trained model - but both have shortcomings: the database approach can be defeated by modifying the file, and the model approach is prone to false positives that could prevent printing of legitimate parts like barrels, brackets, levers, and tubes. (Source)

California Senate Committee on Public Safety (AB 2047 analysis): The bill makes it unlawful to sell or transfer a 3D printer in California that is not equipped with firearm blocking technology or not listed on the DOJ's list of 3D printers for which the manufacturer has submitted a complete attestation; the law defines "firearm manufacturing machine" to include a 3D printer, a CNC milling machine, or a similar machine marketed or sold, or reasonably designed or intended to be used, to manufacture or produce firearms; the application of firearm-blocking technology will only be required once ASTM International publishes or adopts a standard for firearm-blocking technology for 3D printers; the law does not apply to existing printers. (Source)

The state law patchwork: Washington, Colorado, New York

Planet 3DP (October 2026): Washington's HB 2320 has been in effect since March 24, 2026, barring the making of frames or receivers on a 3D printer or CNC mill unless you are a federally licensed manufacturer, and restricting the sharing of gun files; Colorado's HB 26-1144 took effect July 1, 2026, banning the printing or milling of guns and certain gun parts without a federal license; the Colorado law defines "3D printing" to include CNC milling (subtractive) and only matters when you are making a functional firearm, an unfinished frame or receiver, a large-capacity magazine, or a rapid-fire device; New York's new 3D printing crimes took effect August 25, 2026 - sharing gun files with unlicensed people is a misdemeanor, and making a ghost gun is a felony; the printer-blocking rule is not in effect in New York; federally, the 3D Printed Gun Safety Act has not moved since June 2025. (Source)

Congress.gov (S.2165, 119th Congress): The 3D Printed Gun Safety Act of 2025 would amend chapter 44 of title 18, United States Code, to prohibit the distribution of 3D printer plans for the printing of firearms; it would make it unlawful for any person to intentionally distribute, over the internet or by means of the World Wide Web, digital instructions in the form of Computer Aided Design files or other code that can automatically program a 3D printer or similar device to produce a firearm or complete a firearm from an unfinished frame or receiver. (Source)

California sues Polymaker over filament marketing

Tom's Hardware / Denise Bertacchi (October 11, 2026): The state of California sued 3D printer filament company Polymaker for promoting ghost guns by marketing to the 3D-printed gun community; the newly formed Consumer Fairness and Public Protection Division is also targeting Roblox and AppLovin; San Diego County sued Polymaker on October 5, 2026, arguing its marketing to the 3D-printed gun community turns PLA filament into a regulated "firearm precursor part." (Source)

Nozzle4 (October 25, 2026): San Diego County sued Polymaker on October 5, 2026, arguing its marketing to the 3D-printed gun community turns PLA filament into a regulated "firearm precursor part"; the lawsuit argues the filament company's marketing crosses the line from selling a printing material into selling the means to produce untraceable firearms. (Source)

The ghost gun landscape: CNC, lathes, and digital manufacturing

Tom's Hardware / Stephen Warwick (October 16, 2026): A gun rights activist unveiled the world's first "AI-made" 3D-printed firearm - a .22 caliber handgun created by an "AI that can generate guns" called GatGPT; the weapon can be manufactured using 3D printers or personal steel mills and lacks traceable serial numbers; a U.S. judge temporarily blocked the online publication of blueprints for 3D-printed firearms in a last-ditch effort to stop a settlement the Trump administration had reached with the company releasing the digital documents; White House spokesman Hogan Gidley said "It is currently illegal to own or make a wholly plastic gun of any kind - including those made on a 3D printer." (Source)

Policing Institute (2026): Ghost guns primarily take two forms: 3D-printed firearms and commercially produced components and kits that require some machining to become a functional firearm; the unregulated market of commercially produced ghost gun kits and components is a far more salient concern for public safety than 3D-printed firearms, which still have technical challenges that have not been fully addressed with consumer-grade 3D printers; jurisdiction over CAD files that facilitate the production of firearms has moved from the Department of State to the Commerce Department, and the distribution of such files remains unclear; the overwhelming majority of ghost gun recoveries have been from commercially produced components and kits, not 3D-printed guns. (Source)

Russia's 3D-printed cruise missiles in Ukraine

Tom's Hardware / Jowi Morales (October 24, 2026): Russia deploys 3D-printed cruise missiles with U.S. electronics in Ukraine, capable of hitting 500mph with a 745-mile range; the missiles use additive manufacturing for components and incorporate U.S.- Origin electronics, highlighting how digital manufacturing has become a significant factor in the war. (Source)

California became the second state to enact firearm restrictions on 3D printers when Governor Gavin Newsom signed AB 2047 on September 26, 2026, requiring 3D printer manufacturers to include firearm-blocking technology in their products once ASTM International publishes a standard. The law only affects printers that have yet to be sold - existing 3D printers do not need to be retrofitted - and it regulates the sale and transfer of 3D printers, not their ownership or use. But the mandate only triggers once a standard exists, and the California Department of Justice must check for one quarterly starting no later than July 1, 2027, through July 1, 2029; if no standard is published by then, the process for manufacturers to comply may never begin.

The California law sits inside a growing patchwork. Washington's HB 2320 has been in effect since March 24, 2026, barring the making of frames or receivers on a 3D printer or CNC mill without a federal license and restricting the sharing of gun files. Colorado's HB 26-1144 took effect July 1, 2026, banning the printing or milling of guns and certain gun parts without a federal license. New York's new 3D printing crimes took effect August 25, 2026, making the sharing of gun files with unlicensed people a misdemeanor and making a ghost gun a felony. California's law, by contrast, contains no printer roster and no crime for modifying your own machine. Two other states - Colorado and Washington - also have similar bills that would require "blocking features" moving through state legislatures. Federally, the 3D Printed Gun Safety Act has not moved since June 2025.

What to watch next: whether ASTM International ever publishes the standard California's law depends on, whether the 3D Printed Gun Safety Act gains traction in the 119th Congress, whether the California DOJ's quarterly checks begin on schedule in July 2027, and whether Polymaker's lawsuit - in which San Diego County and the state of California argue that marketing filament to the 3D-printed gun community turns PLA filament into a regulated "firearm precursor part" - produces a precedent that reaches beyond filament to the printers themselves.

Source links

Saved 2026-10-26 12:17Permalink ↗

Date saved: 2026-10-26 12:17 (PDT)

Sources: San Diego County, TechRadar, Planet 3DP, WIRED, Ground News, Tom's Hardware, The Loadout Blog, Fabbaloo, Reason, California Legislature, New York State, Washington State, Colorado Legislature

Key findings

California sues Polymaker over marketing filament to ghost gun builders

San Diego County (October 5, 2026): San Diego County sued Polymaker, a major manufacturer of 3D printing filament, alleging the company deliberately marketed its products to people manufacturing unserialized firearms. The complaint acknowledges that 3D printing filament itself is not illegal, but alleges that Polymaker intentionally marketed its product toward ghost gun aficionados so they could turn its filament into a regulated firearm precursor part. The lawsuit alleges Polymaker worked with a firearm-printing influencer, promoted products for making guns, and provided technical advice to online communities interested in 3D-printed firearms. The county argues that this marketing violates California consumer protection laws. It is seeking the return of revenue linked to the allegedly illegal marketing, a court order stopping the company from continuing the challenged practices, and civil penalties of up to $2,500 per violation, with each day counting as a separate violation. (Source)
TechRadar (October 2026): San Diego County jumped into California's sprawling ghost gun fight this week, suing a 3D printing filament manufacturer it says hocks material for homespun firearms in violation of state law. San Diego County authorities say Polymaker made a strategic business choice to market and sell 3-D printer filament to Californians for the express purpose of building illegal weapons. In one of the first tests of California's 2026 firearm law, San Diego County alleges Polymaker crossed the line into unlawful business practices by directly marketing its filament to DIY gun builders. (Source)
Reason (October 26, 2026): San Diego County, California, has sued Polymaker, a company that manufactures filament for 3D printers. The lawsuit accuses the company of illegally marketing its products to people who make unregistered firearms, often called ghost guns. The county admits that the filament itself is legal but objects to how the company markets it. (Source)
The Loadout Blog (October 16, 2026): The case comes as California moves forward with AB 2047, legislation addressing technology designed to prevent 3D printers from producing certain prohibited firearms. This is an issue I want to investigate further because the implications could extend beyond firearms. If governments can require technology that determines what a 3D printer can produce, what does that mean for personal manufacturing, consumer privacy, and other legitimate uses of the technology? (Source)

California's AB 2047 signed into law: 3D printers must block firearm printing, but standard does not exist yet

TechRadar Pro (October 9, 2026): California has enacted a new requirement that will eventually make manufacturers add firearm prevention technology to certain 3D printers. The law signed by Governor Gavin Newsom does not immediately require companies to alter machines already sold or owned. The measure instead governs how qualifying printers can enter California's market once the new requirements apply. Existing California 3D printer owners face no new installation requirement. Manufacturers cannot comply fully until ASTM establishes the technical standard. The California Department of Justice must begin checking quarterly for such a standard no later than July 1, 2027. Those checks must continue through July 1, 2029, after which the statutory checking obligation ends if no standard exists. California therefore joins New York as the second U.S. state to establish restrictions specifically concerning firearm production through 3D printing equipment. (Source)
California Legislature (September 26, 2026): AB 2047 was signed by Governor Gavin Newsom on September 26, 2026, effective January 1, 2027. The printer-blocking rule only applies if ASTM publishes a standard. It does not touch printers you already own. Starting no later than July 1, 2027, the state DOJ checks every quarter whether ASTM has published a firearm-blocking standard for 3D printers. The final version has no printer roster and no crime for modifying your own machine. (Source)

State-by-state patchwork: Washington, Colorado, New York, California, federal bill stalled

Planet 3DP (October 2026): Washington's HB 2320 has been in effect since March 24, 2026. It bars making frames or receivers on a 3D printer or CNC mill unless you are a federally licensed manufacturer, and it restricts sharing gun files. Colorado's HB 26-1144 took effect July 1, 2026. It bans printing or milling guns and certain gun parts without a federal license. New York's new 3D printing crimes took effect August 25, 2026. Sharing gun files with unlicensed people is a misdemeanor, and making a ghost gun is a felony. The printer-blocking rule is not in effect. Federally, the 3D Printed Gun Safety Act (H.R. 4143 / S. 2165) has not moved since June 25, 2025. Both chambers have the bill in Judiciary Committee. No action since June 25, 2025. (Source)
WIRED (October 2026): 3D printing an untraceable ghost gun is easier than ever. (Source)
Ground News (October 26, 2026): Newsom signed 10 new gun safety laws addressing firearm violence through enhanced training requirements, expanded restraining orders, and technology restrictions on 3D-printed firearms. Senate Bill 948 mandates four-hour safety courses for gun buyers starting in 2029, while Assembly Bill 2047 requires firearms-blocking technology on 3D printers by July 1, 2029. (Source)

Federal landscape: 3D Printed Gun Safety Act stalled in Judiciary Committee

Planet 3DP (October 2026): H.R. 4143 / S. 2165, the 3D Printed Gun Safety Act of 2025, was introduced June 25, 2025, in both chambers simultaneously. House sponsor is Rep. Moskowitz (D-FL). Senate lead is Sen. Markey with 23 cosponsors. Status: both still in Judiciary Committee. No action since June 25, 2025. (Source)

California this month became the second state, after New York, to pass a law requiring 3D printer manufacturers to build in firearm-blocking technology, but the actual restrictions hinge on a technical standard that does not exist yet. ASTM International has to publish or adopt an applicable standard before the requirement becomes operative, and the California Department of Justice only has to start checking quarterly for such a standard no later than July 1, 2027, with the checking obligation ending if no standard exists by July 1, 2029. The printer-blocking rule does not apply to printers already owned.

The bigger story this week is the lawsuit San Diego County filed against Polymaker, a major 3D printing filament manufacturer, alleging the company deliberately marketed its products to people building untraceable ghost guns. The lawsuit tests whether marketing ordinary PLA filament to gun builders can turn the filament itself into a regulated firearm precursor part under California law. If it succeeds, it opens a new front in ghost gun enforcement that goes after the supply chain rather than the end user. Polymaker is headquartered in Shanghai with U.S. operations based in Houston.

Across the states, the landscape is a patchwork. Washington bars making frames or receivers on a 3D printer or CNC mill without a federal license, and restricts sharing gun files. Colorado bans printing or milling guns and certain gun parts without a federal license. New York makes sharing gun files with unlicensed people a misdemeanor and making a ghost gun a felony, but the printer-blocking rule is not in effect. Federally, the 3D Printed Gun Safety Act has not moved since June 2025.

Source links

Saved 2026-10-26 03:01Permalink ↗

Date saved: 2026-10-26 03:01 (PDT)

Sources: Reason, Ground News, Global Voices, Yahoo News, San Diego County Superior Court records, New York State Legislature, Adafruit

Key findings

California sues Polymaker over ghost gun filament marketing

Reason (October 26, 2026): San Diego County, California, has sued Polymaker, a company that manufactures filament for 3D printers. The lawsuit accuses the company of illegally marketing its products to people who make unregistered firearms, often called "ghost guns." The county admits that the filament itself is legal but objects to how the company markets it. The lawsuit alleges that Polymaker worked with a firearm-printing influencer, promoted products for making guns, and provided technical advice to online communities interested in 3D-printed firearms. The county argues that this marketing violates California consumer protection laws. It is seeking the return of revenue linked to the allegedly illegal marketing, a court order stopping the company from continuing the challenged practices, and civil penalties of up to $2,500 per violation, with each day counting as a separate violation. (Source)

Ground News (October 25, 2026): San Diego County authorities say Polymaker made a "strategic business choice" to market and sell 3D printer filament to Californians for the express purpose of building illegal weapons. The complaint, filed on October 5 in San Diego County Superior Court, acknowledges that 3D printing filament is not illegal but alleges that Polymaker intentionally marketed its product toward ghost gun aficionados so they could turn its filament into a regulated firearm precursor part. (Source)

California's new 3D printer law: AB 2047 and the governor's package

Ground News (October 25, 2026): On Saturday, Governor Gavin Newsom signed 10 new gun safety laws addressing firearm violence through enhanced training requirements, expanded restraining orders, and technology restrictions on 3D-printed firearms. Senate Bill 948 mandates four-hour safety courses for gun buyers starting in 2029. Assembly Bill 2047 requires firearms-blocking technology on 3D printers by July 1, 2029. (Source)

Global Voices (October 2026): California passes a law requiring 3D printers to block weapons manufacturing. The measure conditions the sale of equipment on the incorporation of detection technology. Its application will depend on a technical standard and a subsequent state regulation. (Source)

Yahoo News (October 9, 2026): California's new law targets 3D printers capable of facilitating gunmaking, not existing machines. Existing California 3D printer owners face no new installation requirement. The measure applies to future sales and transfers, meaning owners of existing equipment will not have to install new blocking hardware. Manufacturers will face obligations when covered printers enter California's market after the required technical standard becomes available. California joins New York as the second U.S. state to establish restrictions specifically concerning firearm production through 3D printing equipment. Colorado and Washington are pursuing comparable measures. (Source)

New York's "digital firearm manufacturing code" and CNC inclusion

Adafruit / New York State Legislature (2026): New York enacted a law creating a new category in its penal code called "digital firearm manufacturing code," covering computer-aided design files or other code that can program a 3D printer or CNC milling machine to make a firearm, ghost gun, unfinished frame or receiver, silencer, rapid-fire modification device, or major component. The law defines blocking technology as hardware, software, firmware, or integrated measures that make a printer refuse to print a file unless evaluated by a blueprint detection algorithm. Adafruit's analysis found the language covered not just additive printers but CNC mills -- any machine capable of making three-dimensional modifications to an object from a digital file using subtractive manufacturing. (Source)

Federal and other state frameworks

LenDizzle / News 4 Makers (January 25, 2026): Existing federal law prohibits a person other than a state-licensed firearm manufacturer from using a computer numerical control (CNC) milling machine or three-dimensional printer to manufacture a firearm. If you knowingly or willfully cause a CNC or 3D printing machine to do that, it is a misdemeanor. Several states, including Washington, New York, and California, have introduced bills that would extend these restrictions. (Source)

Liberty Doll (February 20, 2026): Multiple states have introduced new bills targeting 3D printing and 3D printed gun files, plus lawsuits targeting people who have created the files. These bills include not just printing with a printer but milling with a CNC machine within the definition. (Source)

Various / Adafruit (2026): New laws in multiple states are reaching directly into 3D printers, CNC mills, and other fabrication tools -- regulating what files they can read and, in the newest tier, mandating firmware that inspects your work and refuses to run. New York's recently enacted law creates a working group on firearm prevention technology requirements for 3D printers. (Source)

This week, California moved the frontier of 3D printing regulation from theory to active litigation. San Diego County sued Polymaker, a major 3D printing filament manufacturer, alleging that the company illegally marketed its products to people making unregistered "ghost gun" firearms. The lawsuit is notable for what it admits: the filament itself is legal. The county's case is that Polymaker's marketing -- working with firearm-printing influencers, promoting products for making guns, and providing technical advice to online communities -- violated California consumer protection laws. If it succeeds, it sets a precedent for prosecuting the supply chain around 3D-printed weapons without banning the underlying technology, a narrower and more legally defensible approach than the broad printer restrictions that have drawn the most attention.

The broader context is a wave of state laws that reach directly into printers and CNC machines. California's AB 2047, signed by Governor Gavin Newsom on October 25 as part of a package of 10 gun safety laws, requires firearms-blocking technology on 3D printers by July 1, 2029, but the actual restrictions hinge on a technical standard from ASTM International that does not yet exist. New York enacted a law creating a new penal code category called "digital firearm manufacturing code" that covers CAD files, code, or models capable of programming a 3D printer or CNC milling machine to make a firearm or ghost gun parts. Adafruit analyzed New York's language and found it covered not just additive printers but CNC mills and any machine capable of making three-dimensional modifications to an object from a digital file using subtractive manufacturing. Colorado and Washington are pursuing comparable measures.

The First Amendment question is unavoidable. The state cannot scrub gun manufacturing information from the internet, so the legislation targets the distribution of that information as a crime. The Polymaker lawsuit tests whether marketing a legal product for an illegal use is itself illegal, a narrower theory than banning the information outright. The printer DRM approach tests whether a state can mandate that a general-purpose manufacturing tool refuse to run certain files. Both theories are now being litigated. Both will almost certainly reach appellate courts.

Source links

Saved 2026-10-25 18:01Permalink ↗

Date saved: 2026-10-25 18:01 (PDT)

Sources: Stateline, Planet 3DP, Everytown, California Legislature, Washington State Legislature, New York State Legislature, Colorado Legislature, Institute for Justice

Key findings

State laws in effect

Stateline (June 11, 2026): Colorado, Maine, New Jersey, New York, Virginia, and Washington enacted laws this year tightening rules around 3D-printed guns and firearms without serial numbers; the new laws include restrictions on manufacturing untraceable firearms, limits on distribution of digital gun-design files, and requirements aimed at preventing the use of 3D printers to produce gun parts; California is considering a measure requiring 3D printers to include firearm-blocking technology, and a Minnesota proposal did not advance out of the legislature. (Source)
Washington HB 2320 (in effect March 24, 2026): Prohibits making frames or receivers, including unfinished ones, with a 3D printer or CNC mill unless the maker is a federally licensed manufacturer; first violation is a $500 civil infraction; bars selling or sharing gun files with people who are not licensed, and possessing them with intent to distribute or make guns; the companion printer-blocking bill HB 2321 died in committee. (Source)
Colorado HB 26-1144 (in effect July 1, 2026): Prohibits knowingly making a functional firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3D printing or CNC milling without a federal license; penalties are Class 1 misdemeanor for first offense and Class 5 felony for repeat; the bill's definition of "3D printing" includes CNC milling; federally licensed manufacturers and accredited gunsmithing programs are exempt. (Source)
New York S9005-C / A10005-C (file and manufacturing offenses in effect August 25, 2026): Selling or sharing digital gun files with someone who lacks both a NY gunsmith license and a federal firearms license is a Class A misdemeanor; possessing gun files with intent to illegally make guns or share them with prohibited or unlicensed people is a Class A misdemeanor; making a ghost gun or major firearm component is a Class D felony; the printer-blocking rule is not in effect and requires a working group to recommend standards before the Department of Criminal Justice Services can issue rules. (Source)
California AB 2047 (signed September 26, 2026, effective January 1, 2027): The CA Firearm Printing Prevention Act requires consumer 3D printers sold in the state to include technology capable of detecting and blocking attempts to print firearms, gun parts, and machine-gun conversion devices -- but only if and when ASTM publishes an industry standard; if no standard exists by July 1, 2029, the state can stop checking; the final version has no printer roster and no crime for modifying your own machine; printers used only for entertainment-industry props are exempt. (Source)

Federal inaction and related legal fights

Congress / S.2165 -- 3D Printed Gun Safety Act of 2025: Introduced in the Senate on June 25, 2025, by Senator Moskowitz (D-FL) with Markey and 23 cosponsors, the bill would amend Chapter 44 of Title 18 to prohibit the distribution of 3D printer plans for printing firearms -- making it unlawful to intentionally distribute, over the internet or by means of the World Wide Web, digital instructions in the form of CAD files or other code that can automatically program a 3D printer to produce a firearm or complete a firearm from an unfinished frame or receiver; the bill has not moved since June 2025. (Source)
Everytown for Gun Safety (2026): Washington Governor Bob Ferguson signed HB 2320 into law, landmark legislation that closes technological loopholes by regulating the digital blueprints that allow gun printing and by prohibiting the use of 3D printers and CNC milling machines to manufacture firearms and machine gun conversion devices; Everytown president John Feinblatt called 3D-printed guns "untraceable weapons that allow criminals to thwart law enforcement and make a firearm with the push of a button." (Source)
Texas federal court (August 17, 2026): Judge Reed O'Connor ruled key parts of the ATF's 2022 "ghost gun" frame and receiver rule unconstitutional; whether the ruling will be appealed is not yet known. (Source)
San Diego County v. Polymaker (October 5, 2026): San Diego County sued filament maker Polymaker, alleging some of its products were marketed to people building untraceable guns; these are allegations. (Source)
NDAA FY2026 (Public Law 119-60): Starting December 18, 2026, the Department of Defense cannot contract for additive manufacturing machines from companies based in or controlled by China, Russia, Iran, or North Korea, or on federal screening lists; the provision is DoD-only and not hobbyist-facing. (Source)

The states are moving faster than Washington on 3D-printed gun laws, and the moves they are making reveal a clean ideological split: Democratic-led states are passing restrictions that target both the digital files and the machines themselves, while the federal 3D Printed Gun Safety Act has stalled in the Senate since June 2025. California's AB 2047, signed by Governor Gavin Newsom on September 26, requires consumer 3D printers sold in the state to include firearm-blocking technology -- but only if and when ASTM publishes an industry standard, and nothing changes for printers people already own until that standard appears and the state DOJ writes rules. It is a law that turns on a future technical committee decision. New York's approach is more aggressive on paper: file-sharing and manufacturing offenses took effect August 25, making it a Class A misdemeanor to sell or share digital gun files with unlicensed people and a Class D felony to manufacture a ghost gun, but the printer-blocking rule is not in effect and the working group has up to a year just to recommend standards. Washington's HB 2320 has been in effect since March 24 and actually means something right now: making frames or receivers on a 3D printer or CNC mill without a federal manufacturer license is a $500 civil infraction, and sharing gun files with unlicensed people is barred. Colorado's HB 26-1144, in effect since July 1, prohibits 3D printing or CNC milling of functional firearms, unfinished frames or receivers, large-capacity magazines, and rapid-fire devices without a federal license -- and its definition of "3D printing" explicitly includes CNC milling. The throughline is that the state-level patchwork is real and enforceable, while the federal bill sits in committee. What to watch next: the San Diego County lawsuit against filament maker Polymaker, filed October 5, alleging some products were marketed to people building untraceable guns, will test whether the supply chain itself becomes a legal target; and the New Jersey case Davenport (No. 26-184) challenging the state's ban on distributing gun files, with the court asking New Jersey to respond by October 26, will signal whether the file-sharing bans survive constitutional challenge.

Source links

Saved 2026-10-25 03:01Permalink ↗

Date saved: 2026-10-25 03:01 (PDT)

Sources: California Legislative Information, Everytown for Gun Safety, Planet 3DP, Renzulli Law Firm, American Thinker, Ars Technica, ABC7 News

Key findings

California Governor Newsom signs AB 2047, the Firearm Printing Prevention Act

California Legislative Information (September 26, 2026): California Governor Gavin Newsom signed Assembly Bill 2047 on September 26, establishing a new regulatory framework intended to prevent the manufacture of firearms and machine gun conversion devices using 3D printers. The law requires the California Department of Justice to check quarterly beginning no later than July 1, 2027, whether ASTM International has published industry standards for equipping 3D printers with firearm blocking technology. If ASTM publishes standards, the DOJ must publish written guidance or regulations within 24 months describing minimum performance standards. Commencing one year after that guidance is published, it becomes unlawful to sell, offer for sale, or transfer a 3D printer in California that is not equipped with firearm blocking technology meeting those standards. If no ASTM standard exists by July 1, 2029, the department is relieved of further responsibility. The final version contains no printer roster and no crime for modifying your own machine. (Source)

California's law is part of a 10-bill gun safety package including 3D printer safeguards

ABC7 News / Ground News (October 25, 2026): Governor Newsom signed 10 new gun safety laws on October 24-25 addressing firearm violence through enhanced training requirements, expanded restraining orders, and technology restrictions on 3D-printed firearms. Senate Bill 948 mandates four-hour safety courses for gun buyers starting in 2029, and Assembly Bill 2047 requires firearms-blocking technology on 3D printers by July 1, 2029, contingent on ASTM publishing an industry standard. The package expands training, court-ordered firearm restrictions, and temporary storage programs while adding 3D printer safeguards to curb illegal guns and violence. (Source)

Colorado's HB 26-1144 defines 3D printing to include CNC milling

Colorado's HB 26-1144 took effect on July 1, 2026, banning the printing or milling of guns and certain gun parts without a federal license. The law's definition of "3D printing" includes CNC milling, meaning subtractive manufacturing equipment such as CNC machines, mills, and router tables fall under the same statute as additive 3D printers. The law prohibits knowingly making a functional firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3D printing or CNC milling without a federal license. The file-sharing ban was cut before the bill passed. (Planet 3DP, October 2026) (Source)

Washington's HB 2320 bans 3D-printed and CNC-made firearm components without a license

Washington's HB 2320 took effect on March 24, 2026, barring the manufacture of firearm frames or receivers on a 3D printer or CNC mill without a federal manufacturer's license and restricting the sharing of gun files with unlicensed people. Governor Bob Ferguson signed the bill on March 24, 2026. The companion printer-blocking bill, HB 2321, never received a hearing and died when the legislative session ended in March. (Planet 3DP, October 2026) (Source)

New York's 3D printing crimes took effect August 25, printer-blocking rule deferred

New York's new 3D printing crimes took effect on August 25, 2026, making the sharing of gun files with unlicensed people a misdemeanor and the manufacture of a ghost gun a felony. The printer-blocking rule is not yet in effect; a state working group must first decide whether the blocking technology is even feasible, which will be no earlier than 2029. If feasibility is not recognized, the obligation will not be triggered. New York's law, signed on May 27, 2026, also created a new penal code category called "digital firearm manufacturing code" covering CAD files, code, or models that can program a 3D printer or CNC milling machine to make a firearm or firearm components. (Planet 3DP, October 2026) (Source)

New Jersey prohibits unlicensed possession of digital instructions for 3D-printed guns

New Jersey prohibited unlicensed individuals from possessing digital instructions for 3D-printed guns in early 2026, adding to the growing list of states with laws targeting the digital files used to manufacture firearms on 3D printers and CNC machines. The move upstream toward file possession, rather than just physical manufacture, is part of a broader pattern of ghost gun regulation that reaches the design phase of production. (Giffords Law Center, October 2026) (Source)

Federal 3D Printed Gun Safety Act has not moved since June 2025

The federal 3D Printed Gun Safety Act has not moved in Congress since June 2025, leaving the state-level laws in Washington, Colorado, New York, California, New Jersey, and Delaware as the active legislative front for 3D-printed firearm regulation. At least 16 states have laws addressing 3D-printed firearms, with 7 adding major legislation in 2026, according to Stateline. The federal inaction leaves a patchwork of state laws that reach different equipment, files, and activities depending on where the maker is located. (Planet 3DP, October 2026) (Source)

Critics say print-blocking technology is technically infeasible

Quality Rot via YouTube (June 23, 2026): The Electronic Frontier Foundation, Adafruit, the Firearms Policy Coalition, and working engineers have said that print-blocking technology is technically infeasible and will lock makers into proprietary, surveilled hardware. Adafruit's analysis of New York's language found it reached CNC mills and subtractive-manufacturing machines, not just 3D printers. The blocking technology requires a firearms blueprints detection algorithm that can evaluate every print job before the printer proceeds, and critics argue the technology cannot reliably distinguish between a firearm component and a legitimate part that happens to share geometric properties. (Source)

The most important thing about the 3D printing gun laws passing in 2026 is that they are reaching far beyond 3D printers. Colorado's HB 26-1144, which took effect July 1, explicitly defines "3D printing" to include CNC milling, which is subtractive manufacturing. That means a CNC machine, a milling machine, a router table, and a lathe are all legally "3D printers" under a ghost gun manufacturing statute. Washington's HB 2320, signed March 24 and effective July 1, bans making firearm frames or receivers on a 3D printer or CNC mill without a federal license and restricts sharing gun files. New York's law, effective August 25, makes sharing gun files with unlicensed people a misdemeanor and making a ghost gun a felony, and its printer-blocking rule will not take effect until a state working group decides whether the technology is even feasible, which won't be before 2029.

California's AB 2047, signed by Governor Gavin Newsom on September 26, is the most aggressive printer-blocking mandate yet, but the final version was significantly weakened during deliberations. The blocking rule only kicks in if ASTM International publishes an industry standard, and if no standard exists by July 1, 2029, the state can stop checking. The final version has no printer roster and no crime for modifying your own machine. The Electronic Frontier Foundation, Adafruit, the Firearms Policy Coalition, and working engineers have all said that print-blocking technology is technically infeasible and will lock makers into proprietary, surveilled hardware. The throughline is that these laws are building a legal framework for content-filtering firmware in consumer manufacturing tools, and the feasibility questions are being deferred to standards bodies and state task forces that have years to deliver answers that may never come.

What to watch next: the ASTM standard process that California is waiting on, the New York working group's feasibility determination, and whether the federal 3D Printed Gun Safety Act, which has not moved since June 2025, gains any traction. The CNC overreach in Colorado and Washington is the most consequential legal change for makers and small shops, and it has received far less attention than the printer-blocking mandates.

Source links

Saved 2026-10-24 18:01Permalink ↗

Date saved: 2026-10-24 18:01 (PDT)

Sources: California Legislature, Washington State Legislature, Colorado Legislature, EFF, Giffords Law Center, 3D Printing Industry, The Verge, Tom's Hardware, Adafruit, Stateline, Mother Jones

Key findings

State laws requiring printer blocking technology

California Governor Gavin Newsom signed legislation making California the second U.S. state to mandate firearm-blocking technology in 3D printers sold within its borders, following a similar measure in New York. The law takes effect only after ASTM International publishes or adopts a technical standard for the blocking technology, with the California Department of Justice checking quarterly starting July 1, 2027, and the monitoring obligation lapsing if no standard appears by July 1, 2029. (Source)
The California law, AB 2047, requires the state Department of Justice to maintain an approved roster of 3D printer makes and models equipped with firearm-blocking technology, and manufacturers who want to sell printers in the state must attest that they have implemented a firearm detection algorithm approved by the government. Civil penalties can reach $25,000 per violation for printers sold after December 1, 2029, that do not appear on the approved list. (Source)
New York became the first state to require 3D printers to scan what users make and decide whether they are allowed to make it, with blocking-technology requirements signed into law on May 27, 2026. The device requirement awaits a state task force, and the law defines its scope to include CNC mills, automated routers, and lathes. (Source)
Adafruit's analysis found that New York's language covers not just additive printers but CNC mills, and in their reading, any machine capable of making three-dimensional modifications to an object from a digital file using subtractive manufacturing. (Source)

Criminalizing the output and the files

Colorado's HB 26-1144, signed into law and effective July 1, 2026, prohibits knowingly manufacturing or producing a potentially functioning firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3D printing, defining 3D printing to mean both additive and subtractive manufacturing. A first offense is a class 1 misdemeanor, and a second or subsequent offense is a class 5 felony. (Source)
Washington's HB 2320, signed into law with an effective date of March 24, 2026, prohibits manufacturing a frame or receiver or an unfinished frame or receiver by use of a 3D printer or CNC milling machine unless the person is licensed to manufacture firearms under federal law. It also prohibits selling, transferring, or distributing digital firearm manufacturing code to anyone not licensed to manufacture firearms. (Source)
Washington's law defines "digital firearm manufacturing code" as any digital instructions in the form of CAD files or other code stored and displayed in electronic format as a digital model that may be used to program a 3D printer or a CNC milling machine to manufacture a firearm, frame or receiver, magazine, or unlawful firearm part. (Source)
California law requires any person, firm, or corporation to obtain a firearm manufacturer's license to use a 3D printer to manufacture any number of firearms, and similarly requires a federal license to use a CNC milling machine to manufacture a firearm, including a completed or unfinished frame or receiver. (Source)

The blocking technology debate

The EFF has argued that print-blocking cannot work reliably, because a database-matching approach can be defeated by modifying a file, such as changing its size or splitting it into pieces, while an AI-based detection approach is prone to false positives that could prevent printing of legitimate parts like barrels, brackets, levers, tubes, and other components. (Source)
At least 16 states have laws addressing 3D-printed firearms, with 7 adding major legislation in 2026, according to Stateline reporting cited in an investigation. (Source)
The Federal NDAA FY2026 and HR 4143 have also addressed 3D-printed firearm issues at the federal level, alongside the state-level bills. (Source)
A federal jury convicted a Harrisburg, Illinois man on five gun-related charges after agents raided his home and seized three 3D printers, a CNC milling machine, a Ghost Gunner milling machine, and a drill press with firearm-specific jigs. (Source)

International and broader context

The laws in California, New York, Washington, and Colorado are part of a wider pattern of treating fabrication tools themselves as regulatory choke points, a model that critics compare to locked-down cars and tractors, where owners lose the ability to modify or repair their own equipment. (Source)
Existing 3D printers are exempt from the California and New York blocking requirements; there is no retrofit mandate, and someone who already owns a printer without blocking technology can continue using it. The restrictions apply to new sales and transfers. (Source)

A new legal strategy for controlling homemade firearms has arrived, and it does not target the guns or the people making them. It targets the machines. California, New York, Washington, and Colorado have all moved laws that regulate 3D printers and CNC milling machines as points of enforcement in firearms policy, with California and New York specifically requiring "firearm-blocking" technology in printers sold within their borders. The approach is a direct response to the practical failure of earlier bans: criminalizing the manufacture of 3D-printed guns has proven nearly impossible to enforce because the printing happens in private, and distributing digital CAD files to anyone who can print them is hard to stop.

What makes this wave different from earlier restrictions is the reach of the machine definitions. New York's law, analyzed by Adafruit, reaches CNC mills and subtractive-manufacturing machines, not just 3D printers. Washington's law defines "digital firearm manufacturing code" to include any instructions that may be used to program a CNC milling machine. Colorado's bill defines 3D printing to include both additive and subtractive manufacturing. The practical effect is that a lathe, a router, and a milling machine used in a home workshop or a school shop class can fall under the same legal umbrella as a desktop 3D printer, depending on how they are marketed and what they are capable of making from a digital file. The EFF, Adafruit, and the Firearms Policy Coalition have all argued the blocking technology is technically infeasible, and that it will lock makers into proprietary, surveilled hardware.

Source links

Saved 2026-10-24 15:24Permalink ↗

Date saved: 2026-10-24 15:24 (PDT)

Sources: GBH, New York State Assembly, Futurism, Manhattan District Attorney

Key findings

Massachusetts Question 9 goes to voters

GBH (Oct 23, 2026): Question 9 is a ballot referendum on Chapter 135, the 2024 gun law: a yes vote keeps it, a no vote repeals it. The law requires serial numbers on all guns, which means 3D-printed or parts-kit ghost guns must be registered, bans modifications that convert semi-automatics to automatic fire, and expands red-flag petitions to health care providers and school officials. Massachusetts had the country's second-lowest firearm death rate in 2024, at 3.8 per 100,000 residents. (Source)

New York targets files and printers

New York State Assembly (Oct 2026): The SFY 2026-27 enacted budget prohibits manufacturing untraceable firearms with 3D printers and bans the sale and distribution of the digital files used to produce them, covering silencers, high-capacity magazines and other components as well. It also directs a state working group to evaluate whether blocking technology can be built into 3D printers sold in New York to stop them producing firearms at all. NYPD ghost gun seizures jumped more than twentyfold between 2018 and 2022. (Source)
Manhattan District Attorney (2026): Manhattan prosecutors credit the same 2026 New York law with giving the state a tool against the flow of printed ghost guns that earlier seizures only documented, alongside the office's broader gun violence work. (Source)

The capability side: an AI that generates guns

Futurism (Oct 2026): Gun-rights activist Cody Wilson unveiled the WASP, a .22 caliber weapon he calls the first AI-made gun, and "GatGPT," an AI gun generator trained on DEFCAD, his online library of millions of digital gun models. It answers firearms questions and picks parts for a build, and the WASP itself carries no serial number, which is the definition of a ghost gun. Wilson told The Verge the point is an AI that can generate guns, not a single generated gun. (Source)

The 3D-printed gun fight has moved from legislatures to the ballot box. Massachusetts votes on November 3 on Question 9, a referendum that decides whether a 2024 law survives: that law puts serial numbers on every gun in the state including printed ghost guns, bans the parts that turn semi-automatics into automatics, and widens who can ask a judge to remove someone's firearms. A no vote does not restrict anything new, it deletes what is already on the books, which makes this the first time a state has handed its entire ghost gun regime to a popular vote.

The second front is the printer itself. New York's budget this year does not just criminalize printing untraceable guns, it bans selling or distributing the digital files that describe them, and it formally asks a state working group whether blocking technology could be built into printers sold in New York at all. That is the logical endpoint of a decade of file bans, and it is the point where gun control runs head first into general-purpose hardware, scanners and free expression.

Meanwhile the capability side did not wait. Cody Wilson, who printed the first working plastic gun thirteen years ago, now sells the story of an AI that designs guns on demand, trained on the same library of millions of models the ghost gun community already downloads from. Whoever wins the votes and the court fights, the technical problem keeps getting easier for buyers.

Watch next: the Question 9 result on election night, and whether any other state copies New York's working group language about printer-level blocking.

Source links

Saved 2026-10-24 03:01Permalink ↗

Date saved: 2026-10-24 03:01 (PDT)

Sources: Giffords, KOTA TV, Washington State Legislature, Colorado Legislature, Ryan McBeth, Planet 3DP, EFF

Key findings

States enacting 3D printing and CNC restrictions

Giffords (2026): Colorado (HB 1144) prohibited manufacturing a firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device with a 3D printer or CNC milling machine without a federal firearms license. New Jersey, which previously banned 3D printing firearms without a license, also prohibited the possession of the digital code used to 3D print firearms with the intent to manufacture a firearm (AB 4975). New York (S. 9005) became the first state to require that all 3D printers for sale come with blocking technology to prevent the printer's use to manufacture firearms and conversion devices. Washington banned not only the 3D printing of firearms but also the distribution of a digital firearm manufacturing code (HB 2320). California is considering a bill (AB 2047) that would require blocking technology on 3D printers akin to New York's law. (Source)
KOTA TV (2026): This year, Colorado, Maine, New Jersey, New York, Virginia, and Washington state enacted laws tightening rules around 3D-printed guns and firearms without serial numbers. The new laws include restrictions on manufacturing untraceable firearms, limits on the distribution of digital gun-design files, and requirements aimed at preventing the use of 3D printers to produce gun parts. Including this year's measures, at least 16 states have regulations in place for ghost guns, and at least eight states and the District of Columbia specifically outlaw 3D-printed guns. (Source)

New York's blocking technology mandate

Ryan McBeth (2026): New York passed a law aimed at stopping people from using 3D printers to make guns and ghost gun parts. The law defines digital firearms manufacturing code as digital instructions, CAD files, code, or models that can be used to program a 3D printer or CNC milling machine to make a firearm, a ghost gun, an unfinished frame receiver, a silencer, rapid-fire modification device, or major component. The law creates a working group on firearm prevention technology and defines blocking technology as hardware, software, firmware, or integrated measures that make a printer refuse to print a file unless evaluated by a blueprint detection algorithm and determined not to be a firearm or illegal firearm part. (Source)
Planet 3DP (2026): New York S9005 requires all 3D printers sold in the state to include blocking technology that prevents the production of firearms and illegal gun parts, if a state working group determines it to be technologically feasible. Violating the law would carry a civil penalty with a $5,000 fine per product. The law also prohibits possessing the digital firearm manufacturing code used by 3D printers to create a firearm with the intent to use it to manufacture one. (Source)

Colorado's comprehensive ban on unlicensed manufacturing

Colorado Legislature (2026): HB 26-1144 defines 3-dimensional printing to mean additive and subtractive manufacturing. The act prohibits knowingly manufacturing or producing a potentially functioning firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3-dimensional printing. The prohibition does not apply to a federally licensed firearm manufacturer, an instructor or student of an accredited gunsmithing program, or an institution that operates an accredited gunsmithing program. Unlawful 3-dimensional printing of a firearm or firearm component is a class 1 misdemeanor; a second or subsequent offense is a class 5 felony. The act took effect July 1, 2026. (Source)

Washington's law covering digital code distribution

Washington State Legislature (2026): HB 2320 prohibits using a 3D printer, CNC milling machine, or other means to manufacture machine guns, bump-fire stocks, undetectable firearms, short-barreled shotguns, or short-barreled rifles. It prohibits manufacturing an untraceable firearm with intent to sell. It prohibits selling, transferring, distributing, or offering to sell digital firearm manufacturing code for a firearm or unfinished frame or receiver to a person who is not licensed to manufacture firearms under federal law. It prohibits possessing digital firearm manufacturing code with an intent to distribute the code to a person who is not licensed, or with an intent to manufacture a firearm using a 3D printer or CNC milling machine. (Source)

Civil liberties pushback

Electronic Frontier Foundation / Various (2026): Critics including the Electronic Frontier Foundation have argued that legislation requiring surveillance software embedded in consumer 3D printers and making it a felony to store or share certain print files is dangerously over-broad and puts journalists, researchers, and everyday tinkerers at risk. The concern is that CAD files and digital designs have countless legitimate uses across engineering, art, and education, and that blanket criminalization of certain file types creates a de facto prior restraint on lawful activity. (Source)

The 3D printing and digital manufacturing law story in 2026 is a rare case of state-level policy moving faster than federal action, and doing so on both sides of the issue: some states are banning the practice outright while others are mandating that the printers themselves be modified to block firearm production. The throughline is that the same technology capable of making legitimate replacement parts for home repairs and prototyping is also capable of producing untraceable firearms, and the legislative response has become a patchwork that ranges from rational gun-safety measures to provisions that critics say would effectively criminalize large categories of lawful manufacturing activity.

What makes this year notable is the sheer number of states that moved. Colorado, Maine, New Jersey, New York, Virginia, and Washington all enacted laws tightening rules around 3D-printed guns and firearms without serial numbers. New York became the first state to require that all 3D printers sold come with blocking technology to prevent the manufacture of firearms. Washington prohibited not only 3D printing but also the distribution of digital firearm manufacturing code. California is considering a similar blocking-technology requirement. At least 16 states now have regulations for ghost guns, and at least eight states plus the District of Columbia specifically outlaw 3D-printed guns.

The open-source hardware community and civil liberties groups have pushed back hard, arguing that printer content-filter mandates create inherent surveillance mechanisms, criminalize the possession of CAD files that have many legitimate uses, and are technically unworkable in practice. The Electronic Frontier Foundation has called the legislation dangerously over-broad. The battle now is playing out across state legislatures, and the outcome will affect not just gun policy but the future of decentralized digital manufacturing itself.

Source links

Saved 2026-10-23 18:00Permalink ↗

Date saved: 2026-10-23 18:00 (PDT)

Sources: Colorado General Assembly, Washington State Legislature, PCMag, Congress.gov, California Senate Public Safety Committee

Key findings

Washington State enacts comprehensive 3D printing and CNC law

Washington's HB 2320, signed into law as Chapter 203 of the 2026 Laws, prohibits manufacturing firearms and firearm components using 3D printers or CNC milling machines unless the person is a federally licensed manufacturer. The law defines 'digital firearm manufacturing code' and makes it unlawful to possess such code with intent to distribute to an unlicensed person or with intent to manufacture a firearm. The law took effect March 24, 2026, except for section 3 which takes effect June 30, 2027. (Source)

Colorado passes bill prohibiting 3D-printed firearms

Colorado's HB 26-1144 prohibits knowingly manufacturing a potentially functioning firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3D printing. The bill defines 3D printing to include both additive and subtractive manufacturing. Violations are a class 1 misdemeanor, except a second or subsequent offense is a class 5 felony. The bill exempts federally licensed manufacturers and accredited gunsmithing programs. (Source)

California advances printer content-filter mandate

California's AB 2047 would require the Department of Justice to publish guidance on performance standards for firearm blueprint detection algorithms for 3D printer manufacturers. Any business producing 3D printers would need to submit an attestation for each make and model they intend to sell in California by March 1, 2029. It would become a crime to knowingly disable or circumvent firearm blocking technology installed in a 3D printer with intent to manufacture firearms. (Source)

Federal bill reintroduced in Senate

Senator Markey's 3D Printed Gun Safety Act of 2025 (S.2165) would amend title 18 of the US Code to make it unlawful to intentionally distribute digital instructions in the form of CAD files or other code that can automatically program a 3D printer to produce a firearm or complete a firearm from an unfinished frame or receiver. The bill was introduced June 25, 2025 and referred to the Judiciary Committee. (Source)

Federal analysis grouped 3D-printed firearms with ghost guns

Federal analysis during the Biden administration, commissioned by executive order in 2024, increasingly grouped 3D-printed firearms into the broader category of ghost guns, providing part of the policy foundation for the state-level legislative push. (Source)

State laws already criminalize possession of untraceable firearms

California, Washington, and New York already make it illegal to possess an unserialized firearm. The new laws attempt to reach further upstream into the manufacturing infrastructure itself, regulating digital files and printer technology rather than just the finished weapon. (Source)

Colorado bill criminalizes digital instructions distribution

Colorado's HB 26-1144 also criminalizes possessing or distributing digital instructions if circumstances indicate intent to manufacture or distribute unlawfully, reaching the digital file-sharing dimension of the problem. (Source)

The legal landscape around 3D-printed and CNC-machined firearms has shifted sharply in 2026, and the trend is unmistakable: states are moving beyond banning ghost guns themselves to regulating the machines, the digital files, and the printer technology that make them possible. Washington State's HB 2320, Colorado's HB 26-1144, and California's AB 2047 each take a different angle on the same underlying concern, and together they represent a front-line effort to close what lawmakers call a digital loophole.

What makes this moment notable is the upstream reach of the new laws. Washington's legislation explicitly regulates 'digital firearm manufacturing code' and prohibits possessing such code with intent to distribute to an unlicensed person. California's AB 2047 would require 3D printers sold in the state to include blocking technology capable of detecting and preventing the production of firearm components, with criminal penalties for circumventing that technology. Colorado's bill defines 3D printing to include both additive and subtractive manufacturing, explicitly encompassing CNC machines.

The federal dimension has been quieter. Senator Markey's 3D Printed Gun Safety Act of 2025 would prohibit distributing digital instructions that can program a 3D printer to produce a firearm, but the bill has not advanced. The gap between state activity and federal inaction is the story here, and it raises the question of whether a national standard will emerge or whether manufacturers will face conflicting state-by-state requirements.

The throughline connects to the broader ghost gun debate. It is already illegal in California, Washington, and New York to possess an unserialized firearm. The new laws attempt to reach further upstream into the manufacturing infrastructure itself. (Source)

Source links

Saved 2026-10-23 03:00Permalink ↗

Date saved: 2026-10-23 03:00 (PDT)

Sources: GIFFORDS Law Center, News From The States, Washington State Legislature, Colorado Legislature, New York Senate, Planet 3DP, Ryan McBeth, News 4 Makers

Key findings

The 2026 state legislative wave

GIFFORDS Law Center (Aug 12, 2026): Colorado (HB 1144) prohibited manufacturing a firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device with a 3D printer or CNC milling machine without a federal firearms license; New Jersey prohibited possession of the digital code used to 3D print firearms with the intent to manufacture a firearm (AB 4975); New York (S. 9005) became the first state to require that all 3D printers for sale come with blocking technology to prevent the printer's use to manufacture firearms and conversion devices; Washington prohibited not only the 3D printing of firearms but also the distribution of digital firearm manufacturing code (HB 2320); California is considering AB 2047, which would require blocking technology on 3D printers akin to New York's law. (Source)
News From The States (2026): Colorado, Maine, New Jersey, New York, Virginia, and Washington state enacted laws tightening rules around 3D-printed guns and firearms without serial numbers; the new laws include restrictions on manufacturing untraceable firearms, limits on the distribution of digital gun-design files, and requirements aimed at preventing the use of 3D printers to produce gun parts; Colorado Governor Jared Polis signed a law in May expanding the state's restrictions; Washington Governor Bob Ferguson signed a similar law in March that also targets the digital files used to create the weapons. (Source)

What the laws actually cover

Washington State Legislature, HB 2320 (signed March 2026): Prohibits manufacturing of certain firearms and firearm components through use of a 3D printer or CNC milling machine; prohibits selling, transferring, distributing, or offering to sell digital firearm manufacturing code for a firearm or unfinished frame or receiver to a person not licensed to manufacture firearms under federal law; prohibits possessing digital firearm manufacturing code with intent to distribute to an unlicensed person or with intent to manufacture a firearm using a 3D printer or CNC milling machine; a violation is a civil infraction, a second violation is a misdemeanor. (Source)
Colorado Legislature, HB26-1144: Makes it a criminal offense for private citizens to manufacture firearms or firearm components using 3D printers or CNC machines, unless they are federally licensed manufacturers; also criminalizes possessing or distributing digital instructions if "circumstances indicate intent" to manufacture or distribute unlawfully. (Source)
New York Senate, S. 9005: Requires all 3D printers for sale to come with blocking technology that prevents the printer's use to manufacture firearms and conversion devices; prohibits possessing the digital firearm manufacturing code used by 3D printers to create a firearm with the intent to use it to manufacture one or to distribute it to someone who is prohibited from possessing firearms or is not properly licensed. (Source)

The blocking-technology mandate and maker response

Planet 3DP (May 7, 2026): Washington HB 2320, signed into law March 24, 2026, bans using 3D printers or CNC machines to manufacture firearms or components without a license and restricts sharing digital CAD files for firearm manufacturing with anyone unlicensed; Colorado HB 26-1144, New York S9005 and A2228, California AB 2047, and federal NDAA FY2026 and HR 4143 are all active; the practical question is whether blocking technology can reliably distinguish between a gun part and a non-gun part that happens to have a similar shape. (Source)
Ryan McBeth (Jun 26, 2026): New York's law defines digital firearms manufacturing code as digital instructions, CAD files, code, or models that can be used to program a 3D printer or CNC milling machine to make a firearm, ghost gun, unfinished frame receiver, silencer, rapid-fire modification device, or major component; the law creates a working group on firearm prevention technology and defines blocking technology as hardware, software, or firmware integrated measures that make a printer refuse to print a file unless evaluated by a blueprint detection algorithm. (Source)

The legislative push targeting 3D printers and CNC machines in 2026 is not only about ghost guns. It is about the political and legal precedent for requiring digital manufacturing equipment to police what it makes. Six states (Colorado, Maine, New Jersey, New York, Virginia, and Washington) enacted laws this year tightening rules around 3D-printed firearms, and the most aggressive of them go further than banning the manufacturing: they criminalize possession of the digital code used to print firearms with intent to manufacture, and they require the machines themselves to include blocking technology that refuses to print a file unless a state-maintained database determines it is not a firearm part.

New York became the first state to require that all 3D printers for sale come with blocking technology to prevent the printer's use to manufacture firearms and conversion devices (a requirement that goes into effect as soon as technologically feasible. Washington's HB 2320, signed March 2026, prohibits both the 3D printing of firearms and the distribution of digital firearm manufacturing code, and makes it a civil infraction (second violation a misdemeanor) to possess such code with intent to distribute to an unlicensed person. The throughline is that these bills redefine a CNC milling machine, a laser cutter, or a 3D printer as a potentially criminal tool based on what digital file it is asked to execute) and the blocking-technology requirement effectively outsources censorship of CAD files to a state-approved algorithm. What to watch next is whether California's pending AB 2047, which would require blocking technology on 3D printers sold in the state, passes the Senate, and whether the federal NDAA and HR 4143 proposals create a national baseline.

Source links

Saved 2026-10-22 18:00Permalink ↗

Date saved: 2026-10-22 18:00 (PDT)

Sources: Giffords Law Center, PCMag, California Legislative Information, Synth Anatomy, Layer by Layer, KUOW

Key findings

State laws targeting 3D printing and CNC manufacturing

Colorado passed HB 26-1144, signed by Governor Jared Polis on May 5, 2026, effective July 1, 2026, prohibiting the manufacture of a firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device with a 3D printer or CNC milling machine without a federal firearms license; critically, Colorado defined 3D printing as both additive and subtractive manufacturing, meaning CNC machines, milling equipment, and router tables are legally classified as 3D printers under the statute. (Source)
New York became the first state to require that all 3D printers for sale come with blocking technology to prevent the printer's use to manufacture firearms and conversion devices (S. 9005), signed in May 2026, with the requirement going into effect as soon as technologically feasible; the law also prohibits possessing the digital firearm manufacturing code used by 3D printers to create a firearm with intent to manufacture one or to distribute it to someone prohibited from possessing firearms or not properly licensed. (Source)
Washington enacted HB 2320 in 2026, signed by Governor Bob Ferguson on March 24, 2026, effective July 1, 2026, making it unlawful to manufacture a frame or receiver or unfinished frame or receiver using a 3D printer, CNC milling machine, or other means without a federal license; the law also criminalizes selling, transferring, or possessing digital firearm manufacturing code with intent to distribute to unlicensed persons. (Source)
New Jersey, which previously banned 3D printing firearms without a license, also prohibited the possession of the digital code used to 3D print firearms with the intent to manufacture a firearm (AB 4975). (Source)

The printer content-filter mandate and what it would mean

New York's S.9005 requires that all 3D printers sold in the state come with blocking technology that detects and prevents the production of firearm components; uploaded parts files would be reviewed by AI programs with an additional layer of human intervention, and the state would maintain a database of banned files. (Source)
California's proposed AB 2047 would require 3D printers sold in the state to include blocking technology capable of detecting and preventing the production of firearm components; California's existing AB 1263 expands liability for those who facilitate or distribute digital firearm manufacturing code. (Source)
California already prohibits any person other than a state-licensed firearms manufacturer from using a CNC milling machine or 3D printer to manufacture a firearm, and makes it unlawful to sell, offer to sell, or transfer a CNC milling machine or 3D printer that has the sole or primary function of manufacturing firearms to anyone without a federal license. (Source)
Three US states have introduced or passed legislation that would require surveillance software embedded in consumer 3D printers, and make it a felony to store or share certain print files; House Bill 2320 in Washington takes effect July 1, 2026. (Source)

The legal assault on home manufacturing is no longer confined to ghost guns (it is reaching into the tools themselves, the software that runs them, and the digital files that tell them what to make. New York became the first state in May 2026 to require that all 3D printers sold in the state come with blocking technology capable of detecting and preventing the production of firearm components, with the requirement taking effect as soon as technologically feasible. Washington's HB 2320, signed into law in March 2026, did not just ban the 3D printing of firearms), it reached upstream into the ecosystem that makes them possible, regulating digital firearm files, restricting their distribution, and explicitly pulling 3D printers and CNC machines into the same legal framework. Colorado's HB 26-1144, signed May 5, 2026, takes the most expansive definition of all: it defines 3D printing as both additive AND subtractive manufacturing, meaning CNC machines, milling equipment, and router tables are legally "3D printers" under Colorado law, so woodworkers, machinists, and engineers who have nothing to do with firearms just got pulled into a ghost gun manufacturing statute.

The throughline is that these laws are converging on a common architecture: a requirement that consumer printing hardware contain firmware-level content filters, a prohibition on possessing or distributing the digital code used to manufacture firearms, and felony exposure for sharing certain files. The open-source firmware community has responded with a flood of custom firmware for the M-VAVE FM-1 and similar devices, a different hardware space, but the same dynamic: once a device's firmware is open, the manufacturer loses control over what it can do. The question for 2027 is whether any of these state laws survive legal challenge on First Amendment grounds (code is speech, after all) and whether the federal government follows the states' lead with a national printing mandate.

Source links

Saved 2026-10-22 03:00Permalink ↗

Date saved: 2026-10-22 03:00 (PDT)

Sources: Giffords, Colorado Legislature, California Senate, PCMag, The Register, Adafruit, EFF, New York Senate, Washington State Legislature

Key findings

Colorado: 3D printing defined to include CNC, felony for second offense

Giffords (2026): Colorado (HB 1144) prohibited manufacturing a firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device with a 3D printer or CNC milling machine without a federal firearms license. New Jersey previously banned 3D printing firearms without a license and also prohibited possession of the digital code used to 3D print firearms with intent to manufacture one (AB 4975). New York (S.9005) became the first state to require that all 3D printers for sale come with blocking technology to prevent the printer's use to manufacture firearms and conversion devices, requirement goes into effect as soon as technologically feasible. Washington lawmakers banned not only 3D printing of firearms but also distribution of digital firearm manufacturing code (HB 2320). California is considering AB 2047 requiring blocking technology on 3D printers akin to New York's law. (Source)
Colorado Legislature (HB26-1144): The act defines 3-dimensional printing to mean additive and subtractive manufacturing. It prohibits knowingly manufacturing or producing a potentially functioning firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3-dimensional printing. Unlawful 3-dimensional printing of a firearm or firearm component is a class 1 misdemeanor; a second or subsequent offense is a class 5 felony. The act also criminalizes possessing or distributing digital instructions if "circumstances indicate intent" to manufacture or distribute unlawfully. Effective July 1, 2026. (Source)
Planet 3DP (May 7, 2026): Colorado's law has a definition problem most people aren't talking about, it defines 3D printing as both additive AND subtractive manufacturing. That means CNC machines, milling equipment, and router tables are legally 3D printers under Colorado law. Woodworkers, machinists, and engineers who have nothing to do with firearms just got pulled into a ghost gun manufacturing statute. Governor Jared Polis signed HB 26-1144 on May 5, 2026, effective July 1. (Source)

New York: blocking technology mandate and digital firearm manufacturing code felony

PCMag / Adafruit (2026): New York's FY 2026-2027 executive budget bill (S.9005 / A.10005) requires all 3D printers sold or delivered in New York to include "blocking technology," defined as software or firmware that scans every print file through a "firearms blueprint detection algorithm" and refuses to print anything it flags as a potential firearm or firearm component. The requirement would cover a broad set of manufacturing machinery, not just SLA and FDM additive printers, but also CNC mills and "any machine capable of making three-dimensional modifications to an object from a digital design file using subtractive manufacturing." The law criminalizes the intentional sale, distribution, or possession of digital instructions to illegally manufacture a firearm or component parts without a license. (Source)
Quality Rot (Jun 23, 2026): New York's law creates a new category in its penal code called "digital firearm manufacturing code" covering computer aided design files or other code that can program a 3D printer or a CNC mill to produce a firearm or a major component. Distributing that code to an unlicensed person becomes a felony. The law defines blocking technology as hardware, software, firmware integrated measures that make a printer refuse to print a file unless evaluated by a blueprint detection algorithm and determine that this thing isn't a firearm or an illegal firearm part. Adafruit found the language covered not just additive printers, but CNC mills, and any machine capable of making 3D modifications to an object from a digital file using subtractive manufacturing. (Source)
New York Senate (S.9005): The law requires a state task force to first recommend firearm prevention technology requirements for 3D printers before the blocking mandate takes effect. In-person-only printer sales are also required. (Source)

California, Washington, New Jersey, Delaware: the expanding patchwork

California Senate (AB 2047): The bill makes it unlawful to sell or transfer a 3D printer in California that is not equipped with firearm blocking technology or not listed on the DOJ's list of 3D printers for which the manufacturer has submitted a complete attestation. Requires the DOJ to publish guidance on performance standards for firearm blueprint detection algorithms and software control processes. Commencing December 1, 2029, any business that produces or manufactures 3D printers for sale in California must equip each printer with firearm blocking technology and submit an attestation for each make and model. The bill passed the Assembly in May 2026. (Source)
The Register (Feb 5, 2026): State and federal lawmakers stepped up efforts to prevent the creation of 3D printed guns. Recent bills include New York's FY 2026-2027 executive budget bill, Washington State House Bills 2320 and 2321, and the 3D Printed Gun Safety Act introduced in the US House and Senate. Several states already have laws that disallow distribution of digital gun files: Delaware and New Jersey make it illegal to distribute any files within the state that can be used to program a 3D printer to make a firearm, while California creates a civil cause of action against these actors. (Source)
Washington State Legislature (HB 2320): Governor Bob Ferguson signed HB 2320 on March 24, 2026. It bans using 3D printers or CNC machines to manufacture firearms or components without a license and restricts sharing digital CAD files for firearm manufacturing with anyone unlicensed. It is already in effect. (Source)

Technical feasibility and open-source firmware response

Quality Rot (Jun 23, 2026): At least 16 states have laws addressing 3D-printed firearms; 7 added major legislation in 2026 per Stateline. EFF, Adafruit, Firearms Policy Coalition, and engineers have said the blocking technology is technically infeasible. The blocking mandate reaches open-source firmware, CNC machines, online printer sales, and CAD file sharing across multiple states. (Source)
Synthtopia / M-VAVE (2026): M-VAVE has released FM1 Open, an official firmware and development project that adds an eight-track sequencer, multiple synthesis engines, sample playback and tools for developers to extend the FM-1, part of an emerging ecosystem of open solutions around the FM-1 where users can preview synths online, download them to cheap hardware or run them as plugins in a DAW. This open firmware ecosystem is the kind of community response that printer-level content mandates are likely to trigger. (Source)
Elektron Model:Cycles / Free firmware mod (2026): Model-TG is a free, open-source firmware mod for the Elektron Model:Cycles that adds a full Sampler machine and a variety of other features, the kind of community-built firmware alternative that becomes more relevant when devices face content-blocking mandates. (Source)

The 3D printing and CNC manufacturing law wave of 2026 is the most significant expansion of firearm-adjacent regulation since the ghost gun rules (and it reaches far beyond guns into the general-purpose manufacturing tools that makers, woodworkers, machinists, and engineers use every day. The critical legal innovation is that several states are now defining "3D printing" to include subtractive manufacturing (CNC milling), which means a CNC machine in a home workshop or a vocational school program can fall under the same statutory framework as a resin printer making gun parts. Colorado's HB26-1144, which took effect July 1, 2026, explicitly defines 3D printing as both additive and subtractive manufacturing) a definitional move that the bill's own summary acknowledges pulls CNC machines, milling equipment, and router tables into a ghost gun manufacturing statute.

The throughline connecting these laws is a shift from targeting finished firearms to targeting the entire production pipeline: the digital files (CAD/STL code), the machines that read them, and the firmware that can block them. New York's budget bill (S.9005) is the most aggressive: it requires all 3D printers sold or delivered in the state to include "blocking technology" (firmware that scans every print file through a firearms blueprint detection algorithm and refuses to print anything it flags) and the Adafruit analysis found the language reaches CNC mills and "any machine capable of making three-dimensional modifications to an object from a digital file using subtractive manufacturing." California's AB 2047 would require manufacturers to embed a DOJ-approved firearm blueprint detection algorithm in every printer sold in the state by July 2028, banning the sale of non-compliant printers. These are content-filter mandates for physical manufacturing tools, and they raise the same kind of feasibility and overbreadth questions that content filters for internet platforms do.

What to watch next: whether AB 2047 passes the California Senate and gets signed (it passed the Assembly in May 2026), whether the New York task force actually produces workable blocking-technology standards given the widespread technical skepticism from Adafruit, EFF, and the Firearms Policy Coalition, and whether the federal NDAA FY2026 and HR 4143 produce any national framework that preempts the state patchwork. The open-source firmware community's response (alternate firmwares for the M-VAVE FM-1, Arturia Microfreak, and Elektron devices) is a preview of how the maker community may respond to printer-level mandates.

Source links

Saved 2026-10-21 18:00Permalink ↗

Date saved: 2026-10-21 18:00 (PDT)

Sources: Giffords Law Center, Colorado Legislature, Washington State Legislature, The Register, PCMag, Adafruit, Electronic Frontier Foundation, New York State Legislature, California Legislative Information

Key findings

Colorado bans 3D printing and CNC firearm manufacturing without federal license

Colorado's HB 26-1144, signed into law on May 5, 2026, and effective July 1, 2026, makes it a criminal offense for private citizens to manufacture firearms or firearm components using 3D printers or CNC machines, unless they are federally licensed manufacturers. The law also criminalizes possessing or distributing digital instructions if "circumstances indicate intent" to manufacture or distribute unlawfully. First offense is a class one misdemeanor; second offense is a class five felony with a fine up to $100,000. Critically, Colorado's law defines 3D printing as both additive AND subtractive manufacturing, meaning CNC machines, milling equipment, and router tables are legally captured. (Source)

New York mandates firmware blocking technology on all 3D printers

New York's FY 2026-2027 executive budget bill (S.9005 / A.10005), signed May 27, 2026, became the first state to require that all 3D printers for sale come with blocking technology to prevent the printer's use to manufacture firearms and conversion devices. The requirement takes effect "as soon as technologically feasible." The law also prohibits possessing the digital firearm manufacturing code used by 3D printers to create a firearm with intent to manufacture one, or distributing it to someone prohibited from possessing firearms or not properly licensed. New York also criminalizes the intentional sale, distribution, or possession of digital instructions to illegally manufacture a firearm, and requires in-person-only sales of 3D printers. Adafruit's analysis noted that the language reaches CNC mills and subtractive manufacturing machines, not just 3D printers. (Source)

Washington State regulates 3D printers, CNC machines, and digital firearm code

Washington's HB 2320, signed by Governor Bob Ferguson on March 24, 2026, and effective July 1, 2026, prohibits manufacturing certain firearms and firearm components through use of a 3D printer or CNC milling machine, subject to exceptions. It also restricts the sale, transfer, and distribution of digital firearm manufacturing code, and criminalizes possessing digital firearm manufacturing code with intent to distribute it to an unlicensed person or to manufacture a firearm. The law defines "digital firearm manufacturing code" broadly as any digital instructions in the form of CAD files or other code that may be used to program a 3D printer or CNC milling machine to manufacture a firearm, frame or receiver, magazine, or unlawful firearm part. A follow-up bill, HB 2321, has stalled. (Source)

California advancing printer blocking technology mandate

California's AB 2047, which passed the state Assembly in late May 2026, would require 3D printers sold in the state to include blocking technology capable of detecting and preventing the production of firearm components, with a "firearm blueprint detection algorithm" mandated by July 2028. Non-compliant printers would be banned from sale. California already prohibits using a 3D printer to make firearms, and AB 1089 (2023) allows lawsuits against anyone who distributes digital firearm manufacturing code to anyone in California who is not a federally licensed firearms manufacturer. A proposed AB 2047 would require blocking technology on 3D printers akin to New York's law. (Source)

At least 16 states have laws on 3D-printed firearms; 7 added major legislation in 2026

According to Stateline, at least 16 states have laws addressing 3D-printed firearms, with 7 states adding major legislation in 2026. New Jersey previously banned 3D printing firearms without a license and also prohibited the possession of the digital code used to 3D print firearms with intent to manufacture a firearm (AB 4975). Delaware and New Jersey make it illegal to distribute any files within the state that can be used to program a 3D printer to make a firearm, while California creates a civil cause of action against these actors. (Source)

Federal 3D Printed Gun Safety Act stalled

The 3D Printed Gun Safety Act (HR 4143 and Senate companion) remains stuck in the Judiciary Committee with approximately a 1% chance of passing, according to GovTrack. The federal bill would criminalize the intentional manufacture of firearms using 3D printing without a federal license. (Source)

EFF, Adafruit, and engineers: blocking technology is technically infeasible

The Electronic Frontier Foundation, Adafruit, the Firearms Policy Coalition, and engineers across the spectrum have argued that a reliable "firearms blueprint detection algorithm" that works on every print file without generating false positives that block legitimate engineering and artistic work is technically infeasible. Adafruit's analysis noted that New York's language reaches "any machine capable of making three-dimensional modifications to an object from a digital design file using subtractive manufacturing" (CNC mills, laser cutters, lathes, and router tables) not just 3D printers. (Source)

Mishap: Colorado law captures woodworkers and machinists

Under Colorado's HB 26-1144, a woodworker with a router table and a machinist with a milling machine are legally operating "3D printers", because the law defines 3D printing as both additive and subtractive manufacturing. The definitional sweep means that anyone using a CNC machine, milling machine, or router table to make anything that could be construed as a firearm component is potentially subject to the statute's criminal penalties. (Source)

In 2026, the legislative assault on digital manufacturing crossed a line that should alarm anyone who makes things (not just gun owners. The target was always going to be "ghost guns," the untraceable firearms that can be printed at home. But the vocabulary of the new laws has quietly expanded to capture an entire industrial ecosystem. Colorado's HB 26-1144, signed by Governor Jared Polis on May 5, 2026, defines "3D printing" as both additive AND subtractive manufacturing) meaning CNC machines, milling equipment, and router tables are legally "3D printers" under the statute. Woodworkers, machinists, and engineers who have nothing to do with firearms just got pulled into a ghost gun manufacturing law.

New York went further. Buried in the state's budget bill (S.9005, Part C) is a provision requiring all 3D printers sold or delivered in New York to include "blocking technology" (software or firmware that scans every print file through a "firearms blueprint detection algorithm" and refuses to print anything it flags as a potential firearm or firearm component. Adafruit's analysis noted that this language reaches CNC mills and "any machine capable of making three-dimensional modifications to an object from a digital design file using subtractive manufacturing") not just 3D printers. New York also criminalizes the intentional sale, distribution, or possession of digital instructions to illegally manufacture a firearm, and requires in-person-only sales of 3D printers.

The technical consensus is that the blocking mandate is infeasible. The Electronic Frontier Foundation, Adafruit, the Firearms Policy Coalition, and engineers across the spectrum have all argued that a reliable "firearms blueprint detection algorithm" that works on every print file, for every machine, without generating false positives that block legitimate engineering and artistic work, is not something that exists and cannot be built as specified. California's AB 2047, which passed the Assembly in May 2026, similarly requires a "firearm blueprint detection algorithm" in printers by July 2028, and would ban non-compliant printers from sale. At least 16 states now have laws addressing 3D-printed firearms, with 7 adding major legislation in 2026 alone.

What to watch: The federal 3D Printed Gun Safety Act (HR 4143 and Senate companion) remains stuck in the Judiciary Committee with roughly a 1% chance of passing, according to GovTrack. But the state-level momentum is real and accelerating. The definitional creep (from "3D printer" to "any machine capable of making three-dimensional modifications to an object from a digital design file") is the most consequential and least discussed dimension of this legislative wave. If enacted broadly, it would give states a legal hook to regulate CNC mills, laser cutters, lathes, and router tables as "weapons manufacturing equipment," with firmware mandates that amount to government-mandated spyware in manufacturing tools.

Source links

Saved 2026-10-21 03:00Permalink ↗

Date saved: 2026-10-21 03:00 (PDT)

Sources: Giffords Law Center, PCMag, The Register, Colorado Legislature, Washington Legislature, KOTA TV, Adafruit, Everytown

Key findings

State laws enacted in 2026

Colorado HB 26-1144, signed by Gov. Jared Polis in May and effective July 1, prohibits manufacturing a firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device with a 3D printer or CNC milling machine without a federal firearms license; it also criminalizes possessing or distributing digital instructions if "circumstances indicate intent" to manufacture or distribute unlawfully. (Source)
Washington HB 2320, signed by Gov. Bob Ferguson in March and effective July 1, prohibits using 3D printers and CNC milling machines to manufacture certain firearms and machine-gun conversion devices, and restricts the distribution of digital firearm manufacturing code; it defines "digital firearm manufacturing code" as any CAD files or other code that may be used to program a 3D printer or CNC milling machine to manufacture a firearm, frame or receiver, magazine, or unlawful firearm part. (Source)
New York's FY 2026-2027 executive budget bill (S.9005 / A.10005), signed in May, requires all 3D printers sold or delivered in New York to include "blocking technology", software or firmware that scans every print file through a "firearms blueprint detection algorithm" and refuses to print anything it flags as a potential firearm or component; it also criminalizes the intentional sale, distribution, or possession of digital instructions to illegally manufacture a firearm or component parts without a license, and requires the sale or transfer of any 3D printer to be done in-person. (Source)
New Jersey previously banned 3D printing firearms without a license and also prohibited the possession of the digital code used to 3D print firearms with the intent to manufacture a firearm (AB 4975). (Source)
Maine, Virginia, and additional states also enacted laws tightening rules around 3D-printed guns and firearms without serial numbers in 2026. (Source)

The CNC and subtractive manufacturing reach

Colorado's law defines 3D printing as both additive AND subtractive manufacturing, meaning CNC machines, milling equipment, and router tables are legally "3D printers" under the statute; woodworkers, machinists, and engineers with no connection to firearms are pulled into a ghost gun manufacturing statute. (Source)
New York's definition of "digital firearm manufacturing code" specifically includes "any machine capable of making three-dimensional modifications to an object from a digital design file using subtractive manufacturing", covering CNC mills alongside additive printers. (Source)
California already prohibits using a 3D printer to make firearms, and is considering AB 2047, which would require blocking technology on 3D printers akin to New York's law; California's AB 1263 expands liability for those who facilitate or distribute digital firearm manufacturing code. (Source)
California law requires any person, firm, or corporation to obtain a firearm manufacturer's license from the California Department of Justice to use a CNC milling machine to manufacture a firearm; it is unlawful to sell, offer to sell, or transfer a CNC milling machine or 3D printer that has the sole or primary function of manufacturing firearms to anyone without a federal license. (Source)

Federal dimension and industry response

The 3D Printed Gun Safety Act was introduced in the U.S. House and Senate last June as part of federal efforts to address the issue. (Source)
Adafruit warned that New York's blocking technology requirement would cover a broad set of manufacturing machinery, not just resin and FDM printers, but also CNC mills and any machine capable of making three-dimensional modifications to an object from a digital design file using subtractive manufacturing. (Source)
The Washington Post reported in February that the ATF had updated its rules to close some loopholes in 2022, and that several states already make it illegal to distribute files that can be used to program a 3D printer to make a firearm, Delaware, New Jersey, and California among them. (Source)

The wave of state laws targeting 3D-printed guns is reaching far beyond the ghost gun problem it claims to solve (and the definitional creep is the story worth watching. Colorado's HB 26-1144 and Washington's HB 2320 both define 3D printing as including subtractive manufacturing, which means CNC milling machines, router tables, and by some readings even conventional woodworking equipment fall under statutes originally aimed at untraceable firearms. New York's budget bill requires that every 3D printer sold in the state include "blocking technology") firmware that scans every print file through a firearms blueprint detection algorithm and refuses to print anything flagged as a potential firearm or component. California is considering a similar mandate.

The throughline is a fundamental tension between two legitimate concerns. On one side, untraceable 3D-printed firearms are a real and growing problem for law enforcement, and the distribution of digital firearm manufacturing code is a genuine vector. On the other, a law that defines a CNC mill as a "3D printer" and requires all consumer printing hardware to include government-mandated content filtering opens a door that goes well beyond guns, it establishes a precedent for embedded surveillance and file-blocking in general-purpose manufacturing tools, with the state maintaining a database of banned files. The open-source firmware community (Klipper, Marlin, OrcaSlicer, PrusaSlicer) is directly in the crosshairs of the California proposal's compliance roster.

What to watch next: whether the federal NDAA FY2026 and HR 4143 proposals add a national layer to what is currently a state-by-state patchwork, and how the courts handle the First Amendment implications of criminalizing possession of digital firearm manufacturing code. The Adafruit and open-source hardware community response to New York's blocking technology mandate will be a leading indicator of how much practical resistance these laws face from the maker community.

Source links

Saved 2026-10-20 23:15Permalink ↗

Date saved: 2026-10-20 23:15 (PDT)

Sources: Giffords Law Center, Colorado General Assembly, California State Senate, Washington State Legislature, New York State Senate

Key findings

Colorado bans 3D printing and CNC firearm manufacturing

Colorado's HB 26-1144, which became law on July 1, 2026, prohibits knowingly manufacturing a potentially functioning firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device by 3-dimensional printing, a term the law defines to include both additive and subtractive manufacturing (covering CNC milling machines and lathes). The prohibition does not apply to federally licensed manufacturers, gunsmithing instructors, or accredited gunsmithing programs. A first offense is a class 1 misdemeanor; a second or subsequent offense is a class 5 felony. The bill also criminalizes possessing or distributing digital instructions if circumstances indicate intent to manufacture or distribute unlawfully. (Colorado General Assembly)

New York mandates blocking technology on 3D printers

New York's S. 9005, passed in 2026, became the first state law to require that all 3D printers for sale come with blocking technology to prevent the printer's use in manufacturing firearms and conversion devices. The requirement takes effect as soon as technologically feasible. The law also prohibits possessing digital firearm manufacturing code used by 3D printers to create a firearm with intent to manufacture one, or distributing such code to someone prohibited from possessing firearms or not properly licensed. (Giffords Law Center)

Washington bans digital firearm manufacturing code distribution

Washington's HB 2320 prohibits the manufacturing of certain firearms and firearm components through 3D printers or CNC milling machines, and separately establishes restrictions on the sale, transfer, and distribution of digital firearm manufacturing code. No person may sell, transfer, distribute, or offer to sell digital firearm manufacturing code for a firearm or unfinished frame or receiver to a person not licensed under federal law. No person may possess such code with intent to distribute it to an unlicensed person or with intent to manufacture a firearm using a 3D printer or CNC machine. (Washington State Legislature)

California considers blocking-tech mandate

California already prohibits using a 3D printer to make firearms, but is now considering AB 2047, which would require 3D printer manufacturers to equip printers with firearm blocking technology before sale or distribution in the state, commencing December 1, 2029. The bill requires printer manufacturers to submit attestations to the DOJ for each make and model, and makes it a crime to knowingly disable, deactivate, or circumvent firearm blocking technology with intent to manufacture firearms. (California State Senate)

New Jersey criminalizes possession of digital firearm code

New Jersey previously banned 3D printing firearms without a license and expanded its law in 2026 with AB 4975, which prohibits the possession of digital code used to 3D print firearms with the intent to manufacture a firearm. This closes a gap where a person could legally possess the code but not act on it, the new law criminalizes the possession itself when intent is present. (Giffords Law Center)

Twelve states have passed new gun safety laws in 2026

Giffords reported that a dozen states passed new gun safety laws in 2026, with ghost guns and 3D printers a significant theme. In addition to the states above, Maine required serialization of all firearms (HB 745), and Virginia required serialization and banned ghost guns not regulated as firearms under federal law (HB 40). Virginia also enacted an industry accountability bill, becoming the 11th state to create standards of conduct for the gun industry. (Giffords Law Center)

The legislative fight over who can use a 3D printer or CNC machine to make a gun has become one of the most active fronts in state-level gun policy, and the scope of what lawmakers are targeting has expanded significantly. The newest laws no longer just ban the printing of firearms, they now reach digital manufacturing code itself, the CNC milling machines that can produce firearm components, and even mandate that printers sold to consumers come with blocking technology baked in. New York became the first state to require blocking technology on all 3D printers sold, and California is actively considering a similar mandate.

This matters because it is a direct collision between decentralized manufacturing and the state's monopoly on lethal force. The gun-control side argues that 3D-printed and CNC-milled firearms ("ghost guns" with no serial numbers, no background check, no paper trail) are a loophole large enough to drive a truck through. The counterargument, from the gun-rights side, is that attaching liability to code and machine tools fundamentally transforms a consumer device into a regulated instrument, with implications that extend well beyond firearms. The Colorado law's definition of "3-dimensional printing" to include both additive and subtractive manufacturing (which covers CNC mills and lathes) signals that lawmakers are thinking about the full toolkit of digital fabrication.

What to watch next: whether the courts sustain New York's blocking-technology mandate when it takes effect (the law says "as soon as technologically feasible"), and whether federal action emerges, currently the federal government has largely left this to the states.

Source links

Saved 2026-10-20 18:00Permalink ↗

Date saved: 2026-10-20 18:00 (PDT)

Sources: Congress.gov, Giffords Law Center, PCMag, Washington State Legislature, California Legislative Information, New York State Legislature, Colorado General Assembly

Key findings

Federal bill: 3D Printed Gun Safety Act of 2025

S.2165, 119th Congress (2025-2026): The 3D Printed Gun Safety Act would amend Chapter 44 of Title 18 of the U.S. Code to prohibit the distribution of 3D printer plans for printing firearms. The bill makes it unlawful for any person to "intentionally distribute, over the internet or by means of the World Wide Web, digital instructions in the form of Computer Aided Design files or other code that can automatically program a 3-dimensional printer or similar device to produce a firearm or complete a firearm from an unfinished frame or receiver." Congress finds that "recent technological developments have allowed for the 3D printing of firearms and firearm parts, including parts made out of plastic, by unlicensed individuals in possession of relatively inexpensive 3D printers." (Source)

California: most aggressive state-level framework

Giffords Law Center (updated Feb 12, 2026): California requires any person, firm, or corporation to obtain a firearm manufacturer's license from the California DOJ to legally manufacture more than three firearms in a calendar year (or to use a 3D printer to manufacture any number of firearms. Effective June 30, 2022, California also requires at minimum a valid federal firearms manufacturer or importer license to use a CNC milling machine to manufacture a firearm, including a completed or unfinished frame or receiver. California law now makes it generally unlawful to sell, offer to sell, or transfer a CNC milling machine or 3D printer that has the sole or primary function of manufacturing firearms to anyone without a federal firearms manufacturer or importer license) and makes it unlawful for unlicensed people to possess, purchase, or receive such machines. (Source)
AB 1263 (2025): Updated California's ghost gun regulations to clarify and strengthen laws relating to the distribution of digital firearm manufacturing codes, the code used to instruct a 3D printer or CNC milling machine to produce a firearm. The law now also prohibits distribution of codes relating to rapid-fire devices and large capacity magazines. AB 1263 includes a rebuttable presumption that a website owner violated the law if their site makes digital firearm manufacturing code available and encourages individuals to upload, disseminate, or use it to manufacture firearms. (Source)
AB 2047 (proposed): Would require 3D printers sold in California to incorporate technology to detect and block the production of firearm components, uploaded design files would be scrutinized by AI programs, supplemented by human oversight. (Source)

Washington State: upstream regulation of digital files

Washington State HB 2320 (enacted 2025): Washington crossed a significant legal threshold by regulating not just the physical firearms but the digital ecosystem that makes them possible. The law makes it unlawful to manufacture a frame or receiver using a 3D printer, CNC milling machine, or other means without a federal firearms manufacturer license. It prohibits selling, transferring, distributing, or offering to sell "digital firearm manufacturing code" (defined as any digital instructions in the form of CAD files or other code that may be used to program a 3D printer or CNC milling machine to manufacture a firearm, frame or receiver, unfinished frame or receiver, magazine, or unlawful firearm part) to an unlicensed person. It also prohibits possessing such code with intent to distribute to an unlicensed person or intent to manufacture a firearm. (Source)

New York, Colorado, and the wider trend

New York (signed May 2026): A first-of-its-kind law requires that 3D printers include blocking technology; uploaded parts files are reviewed by AI programs with an additional layer of human intervention. (Source)
Colorado HB26-1144 (signed 2026): Takes a more direct route, criminalizing the manufacture of certain firearms and parts using 3D printing. (Source)
PCMag analysis: "The government's ghost gun battle is taking aim at something much bigger: innovation." Washington's HB 2320 "didn't just target untraceable firearms, it reached upstream into the ecosystem that makes them possible, regulating digital firearm files, restricting their distribution, and explicitly pulling 3D printers and CNC machines into the legal framework." California's AB 2047 "would require printers to actively scan and block certain designs." The broader concern: these measures could fundamentally reshape the 3D printing and digital manufacturing landscape, extending legal liability upstream to the tools and files rather than just the final product. (Source)
CNC and subtractive manufacturing: California explicitly includes CNC milling machines in its licensing requirements, recognizing these machines can carve firearms from metal blocks. Washington's law similarly covers "CNC milling machine" alongside 3D printers. The legal framework is increasingly treating additive and subtractive digital manufacturing as functionally equivalent for regulatory purposes. (Source)

Source links

Saved 2026-10-20 12:45Permalink ↗

Date saved: 2026-10-20 11:00 (PDT)

Sources: Los Angeles Times, Stateline, Washington State Legislature, 3D Printing Industry, Everytown Law

San Diego County sued one of the world's largest 3D-printing filament manufacturers on October 5, alleging the company made a "strategic business choice" to market and sell plastic to Californians for the express purpose of building illegal weapons. The county counsel brought the case with the Giffords Law Center, and the complaint concedes filament itself is not illegal (Los Angeles Times, October 10; Techspot). The county seeks civil penalties, disgorgement of revenue and an injunction, not a ban on filament sales.

The target of all this activity is real: from 2017 through 2023, law enforcement recovered and traced roughly 92,700 privately made firearms, linked to 1,692 homicide-related offenses and 4,106 other violent crime offenses (ATF data via Stateline, June 13). What is new is where the law is climbing: past the gun, past the design file, past the machine, and now to the raw material.

Up the stack: guns, then files, then machines, then plastic

Washington's HB 2320, passed 57-39 on February 16 and signed in March, prohibits manufacturing machine guns, bump-fire stocks, undetectable firearms and short-barreled weapons "including by use of a 3D printer, CNC milling machine, or other means," and reaches unfinished frames and receivers, unless the maker holds a federal firearms licence. It also bans selling, transferring or distributing "digital firearm manufacturing code," defined as any CAD files or digital instructions that may be used to program a 3D printer or CNC machine to manufacture a firearm, frame, receiver, magazine or unlawful part, and criminalises possessing such code with intent to distribute it to an unlicensed person (House bill report). The bill carries an emergency clause; Section 3 takes effect June 30, 2027.

Colorado, Maine, New Jersey, New York, Virginia and Washington all enacted 3D-printed-gun laws this year (Stateline, June 13). Colorado's HB26-1144, signed in May, criminalises manufacturing firearms or components with 3D printers or CNC machines without a federal licence. New York went further into the hardware: printers sold in the state must carry blocking technology if a state working group finds it feasible, with a $5,000 civil penalty per product.

California's AB 2047 would require printers sold in the state to detect and block firearm components. It passed the Assembly in June; Newsom signed an amended version in September, but none of it binds anyone until ASTM International, a private standards body, publishes a technical standard. The state Justice Department must check quarterly for that standard, starting no later than July 1, 2027, and if no standard appears by July 1, 2029 the duty lapses altogether. Printers already owned are exempt (3D Printing Industry).

What the official story leaves out

The crime-control rationale and the machinery being regulated have come apart. Under Washington's definition, the person who shares an STL file is committing the same graded offence as the person who prints the gun: civil infraction, then misdemeanour, then gross misdemeanour, with manufacturing machine-gun parts a class C felony. Testimony in the bill's own record warned that the definition could reach "models that are just geometry data without tool path information," and that a community makerspace "would need to remove their 3D printers to avoid criminal liability" (House bill report). The NRA's Institute for Legislative Action opposed the bill; the industry's argument is that codes for unlicensed gun-making are purely functional and therefore not speech, a position the Third Circuit accepted on February 12, 2026 in Defense Distributed v. Attorney General of New Jersey, holding that "purely functional code with no actual or intended expressive use" gets no First Amendment protection (Everytown Law)).

Both halves of the official story are incomplete. The blocker laws exempt printers already in homes and depend on ASTM setting a standard nobody can be forced to write (a statute with a built-in expiry. Meanwhile the enforcement frontier has moved to marketing: the Polymaker suit alleges a company's sales pitch, not a product, is the violation. At least 16 states now have ghost-gun regulations and at least eight plus DC specifically outlaw 3D-printed guns, according to Everytown for Gun Safety) an advocacy group's count, not a government tally. None of that changes the trace data: the weapons are still being recovered.

What readers can do

If you run a makerspace or school lab in Washington: get a written reading of HB 2320's "digital firearm manufacturing code" definition before Section 3 takes effect June 30, 2027, and ask counsel this exact question: does our shared file library create "possession with intent to distribute" if a member downloads a firearm model?
If you are in California: ask your state senator this exact question, will ASTM publish the blocking-technology standard by July 1, 2027, and what happens to AB 2047 if it does not? A law that expires itself in 2029 is worth knowing about before it is used as a model.
If a firearm is recovered in your community, ask law enforcement whether it was traced as a privately made firearm. ATF trace counts are the only public measure of this problem.
If you sell filament, CAD files or printers, read the Polymaker complaint before your next marketing campaign: the alleged violation is what the company said about its customers, not what it sold them.
Report illegal ghost gun sales or trafficking to the ATF tip line at atf.gov/tips.

Source links

Saved 2026-10-20 03:00Permalink ↗

Date saved: 2026-10-20 03:00 (PDT)

Sources: Washington State Legislature, PCMag, California AG, PC Magazine Opinion

Key findings

Washington State HB 2320, landmark upstream regulation

Washington State Legislature (March 2026): House Bill 2320, signed into law, prohibits anyone from manufacturing a machine gun, bump-fire stock, undetectable firearm, short-barreled shotgun, or short-barreled rifle (including by use of a 3D printer or CNC milling machine), or any part designed solely for converting a weapon into such a firearm. It also prohibits knowingly or recklessly manufacturing a frame or receiver (or unfinished frame/receiver) via 3D printer or CNC unless the person is a federally licensed firearms manufacturer. Critically, the law bans selling, transferring, or distributing "digital firearm manufacturing code", defined as any CAD files or digital instructions that may be used to program a 3D printer or CNC machine to manufacture a firearm, frame, receiver, magazine, or unlawful firearm part, to anyone not federally licensed. Possession of such code with intent to distribute or manufacture is also criminalized. (Source)

California, liability expansion and content-filter mandates

California Attorney General (2025): Assembly Bill 1263, effective January 1, 2026, updates the definition of "digital firearm manufacturing code" to include any CAD/CAM files or digital instructions that may be used to program a CNC milling machine, 3D printer, or similar machine to manufacture firearms or precursor parts. The law expands civil liability for those who knowingly distribute such code to unlicensed persons. Additionally, proposed Assembly Bill 2047 would require 3D printers sold in California to incorporate technology to detect and block the production of firearm components, uploaded design files would be scrutinized by AI programs with human oversight. (Source)
PCMag (2026): California's AB 2047 represents a mandate for printers to actively scan and block certain designs, a content-filter approach to hardware regulation. If passed, this would make California the second state after New York to require such blocking technology. (Source)

New York and Colorado, first-of-their-kind laws

PCMag (2026): New York signed a first-of-its-kind law in May requiring 3D printer blocking technology for firearm components. Uploaded parts files will be reviewed by AI programs with an additional layer of human intervention. Colorado's HB26-1144, signed into law and awaiting governor approval at time of reporting, takes a more direct route by criminalizing the manufacture of certain firearms and parts using 3D printing. (Source)
PCMag (2026): In both California and New York, legislators are considering proposals that would require printers to recognize and reject weapon components, a trend that could spread to other states. The Washington State law is notable because it reached upstream into the digital ecosystem, regulating files and explicitly including both 3D printers and CNC machines within the legal framework. (Source)

Broader implications for digital manufacturing

PCMag Opinion (2026): The ghost gun crackdown is "quietly threatening the future of 3D printing" by regulating not just guns but the digital files and manufacturing hardware that make them possible. The Washington State law's definition of "digital firearm manufacturing code" (any CAD files or instructions that may be used to program a 3D printer or CNC to manufacture a firearm) could be interpreted broadly, raising concerns about chilling effects on legitimate digital manufacturing, prototyping, and hobbyist use of 3D printers and CNC mills. (Source)

Source links

Saved 2026-10-19 18:00Permalink ↗

Date saved: 2026-10-19 18:00 (PDT)

Sources: KOTA TV, PCMag UK, Washington State Legislature, Colorado General Assembly

Key findings

State-Level Restrictions on 3D-Printed Firearms

KOTA TV (Jun 13, 2026): At least six states this year have outlawed or imposed regulations on 3D-printed guns: Colorado, Maine, New Jersey, New York, Virginia, and Washington. The new laws include restrictions on manufacturing untraceable firearms, limits on distribution of digital gun-design files, and requirements aimed at preventing the use of 3D printers to produce gun parts. Maine's law prohibits sale of guns without serial numbers and requires serial numbers on all privately manufactured firearms. New Jersey prohibits unlicensed individuals from possessing digital instructions used to 3D-print firearms. (Source)
Colorado General Assembly (2026): Colorado's HB26-1144 makes it a criminal offense for private citizens to manufacture firearms or firearm components using 3D printers or CNC machines unless they are federally licensed manufacturers. The bill also criminalizes possessing or distributing digital instructions if circumstances indicate intent to manufacture or distribute unlawfully. (Source)

Washington State's Landmark HB 2320

Washington State Legislature (2026): Washington's HB 2320 (Chapter 203, Laws of 2026) prohibits manufacturing (including by 3D printer, CNC milling machine, or other means), any machine gun, bump-fire stock, undetectable firearm, short-barreled shotgun, or short-barreled rifle, or parts designed for converting weapons into such. It bans manufacturing untraceable firearms with intent to sell, and prohibits possessing or distributing 'digital firearm manufacturing code', defined as any CAD files or digital instructions that may be used to program a 3D printer or CNC machine to manufacture a firearm or parts. (Source)
PCMag UK (Mar 2026): With the passage of HB 2320, Washington State crossed a significant line by reaching upstream into the ecosystem that makes untraceable firearms possible, regulating digital firearm files, restricting their distribution, and explicitly pulling 3D printers and CNC machines into the legal framework. California has moved similarly with AB 1263 (expanding liability for digital firearm code distribution) and proposed AB 2047 (requiring 3D printers sold in the state to include blocking technology). New York's state budget includes a law requiring 3D printers sold in the state to include blocking technology if technologically feasible. (Source)

Printer Content-Filter Mandates

KOTA TV (Jun 13, 2026): New York's new law, passed as part of the state budget, will require 3D printers sold in the state to include blocking technology (if a state working group determines it technologically feasible) that prevents production of firearms and illegal gun parts. California's proposed AB 2047 takes a similar approach, requiring printers to recognize and refuse to produce weapon components. These printer-level mandates represent a significant escalation beyond banning the weapons themselves. (Source)
PCMag UK (Mar 2026): The trend of mandating content-filtering in consumer 3D printers is spreading: both California and New York are exploring proposals that would require printers themselves to detect and block attempts to print firearms, gun parts, and machine-gun conversion devices, effectively turning consumer manufacturing tools into government-regulated gatekeepers. (Source)

Source links

Saved 2026-10-19 03:00Permalink ↗

Date saved: 2026-10-19 03:00 (PDT)

Sources: Washington State Legislature, Congress.gov, PCMag, PC Mag UK

Key findings

Washington State HB 2320, broad CNC and 3D printer restrictions

Washington State Legislature (2026): HB 2320, signed into law, prohibits the manufacturing of certain firearms and firearm components through the use of a three-dimensional printer or computer numerical control (CNC) milling machine, subject to exceptions. The law prohibits the sale, transfer, or distribution of certain digital firearm manufacturing code. It restricts: (1) the sale, transfer, and distribution of digital firearm manufacturing code; and (2) manufacturing frames and receivers and unfinished frames and receivers through the use of a 3D printer, CNC milling machine, or other means. No person may manufacture, including by use of a 3D printer, CNC milling machine, or other means, any machine gun, bump-fire stock, undetectable firearm, short-barreled shotgun, or short-barreled rifle, or any part designed for converting a weapon into those categories. No person may knowingly or recklessly manufacture a frame or receiver by use of a 3D printer, CNC milling machine, or other means, unless licensed to manufacture firearms under federal law. No person may sell, transfer, distribute, or offer to sell digital firearm manufacturing code. The law defines "digital firearm manufacturing code" as any digital instructions in the form of CAD files or other code that may be used to program a 3D printer or CNC milling machine to manufacture a firearm, frame, receiver, magazine, or unlawful firearm part. (Source)

Federal legislation: 3D Printed Gun Safety Act

Congress.gov (2025-2026): The 3D Printed Gun Safety Act of 2025 (H.R. 4143 in the House, S. 2165 in the Senate) would amend chapter 44 of title 18, United States Code, to prohibit the distribution of 3D printer plans for the printing of firearms. It would make it unlawful for any person to intentionally distribute, over the internet or by means of the World Wide Web, digital instructions in the form of CAD files or other code that can automatically program a 3-dimensional printer or similar device to produce a firearm or complete a firearm from an unfinished frame or receiver. Introduced June 25, 2025. (Source)

State-level printer content-filter mandates

PCMag (2026): With the passage of Washington's HB 2320, the state reached upstream into the ecosystem that makes ghost guns possible, regulating digital firearm files, restricting their distribution, and explicitly pulling 3D printers and CNC machines into the legal framework. California has moved in a similar direction with AB 1263, which expands liability for those who facilitate or distribute digital firearm manufacturing code, and with the proposed AB 2047, which would require 3D printers sold in the state to include blocking technology capable of detecting and preventing the production of firearm components, uploaded parts files would be reviewed by AI programs with an additional layer of human intervention. A first-of-its-kind law in New York, signed in May, requires that blocking tech; Colorado's HB26-1144, signed into law, takes a more direct route, criminalizing the manufacture of certain firearms and parts using 3D printing. California's proposed AB 2047 would require printers to actively scan and block certain designs. (Source)

PCMag UK: The enactment of HB 2320 signifies more than just an effort to regulate untraceable firearms, it extends its reach upstream, regulating the digital files necessary for firearm creation, limiting their distribution, and explicitly including 3D printers and CNC machines within the legal framework. In both California and New York, legislators are considering proposals that would require printers to recognize and reject weapon components. If these measures pass, uploaded design files would be scrutinized by AI programs, supplemented by human oversight. (Source)

Source links

Saved 2026-10-18 18:00Permalink ↗

Date saved: 2026-10-18 18:00 (PDT)

Sources: PCMag, News From The States (Stateline), Washington State Legislature, California Legislature, PC Mag Opinion

Key findings

Washington state leads with comprehensive law

Washington State Legislature (Mar 2026): Governor Bob Ferguson signed HB 2320, a sweeping law that prohibits manufacturing certain firearms and firearm components through use of a 3D printer or CNC milling machine. The law prohibits the sale, transfer, or distribution of certain digital firearm manufacturing code, defined as any digital instructions in the form of CAD files or other code that may be used to program a 3D printer or CNC milling machine to manufacture a firearm, frame, receiver, magazine, or unlawful firearm part. It criminalizes manufacturing frames and receivers via 3D printer or CNC machine unless the person is licensed under federal law. Possessing digital firearm manufacturing code with intent to distribute to an unlicensed person is also prohibited. ("Digital firearm manufacturing code" means any digital instructions in the form of computer-aided design files or other code stored and displayed in electronic format as a digital model that may be used to program a 3D printer or CNC milling machine to manufacture or produce a firearm.) (Source)

California, New York push printer content-filter mandates

PCMag (2026): California's AB 1263 increases liability for those who facilitate or share digital firearm manufacturing code. California's proposed AB 2047 would require consumer 3D printers sold in the state to include technology capable of detecting and blocking attempts to print firearms, gun parts, and machine-gun conversion devices. The proposal would require the California Department of Justice to publicly release performance and technology standards by 2028. Uploaded design files would be scrutinized by AI programs, supplemented by human oversight. (Source)

News From The States (Jun 11, 2026): As part of New York's state budget approved in 2026, a new law requires 3D printers sold in the state to include blocking technology, if a state working group determines it to be technologically feasible, that prevents the production of firearms and illegal gun parts. Violating the law carries a civil penalty of $5,000 per product. California lawmakers are considering a similar proposal (AB 2047), which passed the Assembly and is pending in the Senate. (Source)

Other states tighten restrictions

News From The States (Jun 11, 2026): Colorado's HB26-1144, signed by Gov. Jared Polis in May, prohibits using 3D printers and similar manufacturing technologies to make firearms, unfinished gun parts, large-capacity magazines, and rapid-fire devices. Virginia Gov. Abigail Spanberger signed a law in April prohibiting the manufacture, sale, or possession of unserialized firearms, including unfinished frames or receivers. Maine enacted a law in January prohibiting the sale of guns without serial numbers and requiring serial numbers on all privately manufactured firearms, including 3D-printed guns. New Jersey's new law prohibits unlicensed individuals from possessing digital instructions used to 3D-print firearms. Including this year's measures, at least 16 states have regulations in place for ghost guns, and at least eight states and the District of Columbia specifically outlaw 3D-printed guns, according to Everytown for Gun Safety. (Source)

Legal challenges and free speech concerns

PCMag (2026): Gun rights groups have sued over state efforts to regulate "ghost guns" and the online distribution of firearm-design files. Some advocates argue that restrictions on 3D-printed guns violate free speech protections by limiting the spread of digital information. The Second Amendment Foundation argues that outright bans are unlikely to stop criminal activity and raise significant constitutional concerns. Some argue that Americans have long been allowed under federal law to manufacture firearms for personal use. Gun control advocates counter that these policies are intended to get ahead of a rapidly evolving threat. (Source)

News From The States (Jun 11, 2026): A Minnesota proposal to regulate 3D-printed firearms (HF 3407) did not advance out of the legislature before lawmakers adjourned in May. The proposal would have banned the sale and possession of ghost guns, limited 3D printing of firearms, prohibited the distribution of firearm design files, and imposed additional requirements on serial numbers. In both California and New York, legislators are considering proposals that would require printers to recognize and reject weapon components, with uploaded files reviewed by AI programs and human oversight. (Source)

Broader manufacturing implications

PCMag (2026): The ghost gun crackdown is "quietly threatening the future of 3D printing." Washington's HB 2320 didn't just target untraceable firearms, it reached upstream into the ecosystem that makes them possible, regulating digital firearm files, restricting their distribution, and explicitly pulling 3D printers and CNC machines into the legal framework. California's AB 1263 expands liability for those who facilitate or distribute digital firearm manufacturing code. The trend raises questions about whether content-filter mandates on general-purpose manufacturing tools could set a precedent for regulating other types of digital manufacturing. (Source)

Source links

Saved 2026-10-18 14:33Permalink ↗

Date saved: 2026-10-18 14:33 (PDT)

Sources: CA DOJ, Washington State Legislature, Giffords Law Center, PCMag, NY law firm alerts, Colorado Legislature

Scope

Laws targeting 3D printers, CNC milling machines, lathes, and digital manufacturing code, overwhelmingly focused on firearm ("ghost gun") production, but with growing reach into the machines and files themselves.

Federal / general

Federal law: unlicensed manufacture of firearms (incl. by 3D printer or CNC) illegal; undetectable firearms act applies. Frames/receivers (incl. unfinished) must be serialized by licensed manufacturers. "Digital firearm manufacturing code" = CAD files/instructions that program a 3D printer or CNC machine to make firearms/parts.

State laws

California

Penal Code §29185: No person other than a state-licensed firearms manufacturer may use a CNC machine or 3D printer to manufacture a firearm; unlawful to sell/transfer/possess a CNC milling machine or 3D printer whose sole or primary function is manufacturing firearms (effective June 30, 2022 for CNC).
License required to manufacture 3+ firearms/year, or any number via 3D printer.
AB 1263 + SB 704 (effective Jan 1, 2026): Update definitions of "firearm accessory" and "firearm manufacturing machine" under the Firearm Industry Responsibility Act; new standards for sale of firearm barrels.
Effective Jan 1, 2026: Expanded criminal and civil liability for facilitating unlawful firearm manufacture, sharing/distributing digital manufacturing files to unlicensed individuals; aiding/abetting use of CNC machines or 3D printers.
AB 2047 (proposed, 2026): Would mandate 3D printers sold in CA embed technology to detect and block printing of firearm components.
2025 updates strengthened rules on distribution of digital firearm manufacturing code.

Washington State, HB 2320 (2025-26)

Prohibits manufacturing certain firearms/components via 3D printer or CNC milling machine.
Bans manufacture of untraceable firearms (with or without intent to sell).
Bans knowing/reckless manufacture of frames/receivers (finished or unfinished) by 3D printer/CNC unless federally licensed.
Bans sale/transfer/distribution of "digital firearm manufacturing code" to unlicensed persons; bans possessing such code with intent to distribute or to manufacture.
Covers machine guns, bump-fire stocks, undetectable firearms, SBRs/shotguns made by any means incl. 3D/CNC.

New York, 2026 proposals (Hochul State of the State)

Would require all 3D printers sold in NY to include software safeguards blocking production of firearms/components.
Criminalize intentional distribution/possession of digital files used to 3D-print firearms or key components (incl. auto sears).
Elevate 3D-printed firearm/component manufacturing to felony offenses, even if no completed firearm results.
Minimum safety standards for 3D printer manufacturers selling into NY.

Colorado, HB26-1144 (2026)

Prohibits 3D printing of firearm frames and receivers; criminalizes manufacturing certain firearms and parts via 3D printing. Passed House Judiciary Feb 2026; awaiting/pending governor action as of report date.

Industry pushback

PCMag: Critics argue these laws reach "something much bigger: innovation", regulating upstream digital files and explicitly folding 3D printers and CNC machines into firearms law. Printer-mandated gun-detection software in CA/NY proposals is seen as a precedent for scanning/blocking any regulated object. (Source)

Key takeaways

1. Trend: from regulating the firearm → to regulating the machine (3D printers, CNC) → to regulating the digital file/code.

2. "Firearm manufacturing machine" is now a defined legal category (CA) covering 3D printers and CNC mills marketed/intended for gun production.

3. Mandatory printer-level content filtering (CA AB 2047, NY Hochul proposal) would be the first peacetime US mandate for consumer machines to block specific outputs.

4. Lathes/subtractive manufacturing generally remain unregulated except where machines meet the "sole or primary function" firearm-manufacturing test or are used to make regulated firearms.

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