3D Printing & CNC Manufacturing Laws, Research Digest

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.