3D Printing CNC Manufacturing Laws: Research Digest

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.