A first-of-its-kind New York law would require many 3D printers sold for home and business to include technology that blocks firearm designs. The mandate would not take effect until at least 2029, as supporters push for industry standards and critics warn the
A 3D printer sitting on a workbench can make toys, prosthetic limbs, even airplane parts. Next to that, the same machine can also produce pieces needed to assemble firearms — using digital designs available online — and the results can be hard for law enforcement to trace.
Now New York is moving to change what that printer is allowed to do.
A first-of-its-kind law in New York would require 3D printers sold for homes and businesses to come equipped with technology blocking them from making guns. A similar effort is under consideration in California. The goal is to thwart the latest technique for producing untraceable “ghost guns” that have turned up in crimes. even as questions persist about whether the blocking technology can work as intended and fears grow about its effect on personal privacy and constitutional rights.
What makes the New York proposal different is that it targets the equipment used to produce firearms — not the people who make them.
About one-third of U.S. states have already taken steps to ban or regulate build-it-yourself firearms without serial numbers and outside the background checks required to purchase guns from federally licensed dealers. Supporters say the next step should be to make it harder for the devices themselves to print weapon parts.
The effort arrives as privately made guns show up more often in serious cases. A U.S. Department of Justice report released last year found that the number of privately made guns recovered in crimes and submitted to federal authorities rose from about 1. 600 in 2017 to nearly 27. 500 in 2023. The report did not specify how many of those guns came from 3D printers.
In New York, the urgency is underscored by a high-profile case: police said a 3D-printed gun was likely used to kill UnitedHealthcare’s CEO in 2024.
Under the New York law. and a California bill now in the Legislature. panels of experts would be directed to come up with standards for firearm blueprint detection algorithms. The proposed technology would analyze every design submitted for 3D printing. compare it to a digital library of firearm parts. and reject designs that are similar.
The study process would start now. But the mandate that 3D printers come equipped with firearm blocking technology wouldn’t begin until 2029 — or later in New York’s case, if the study group determines it’s not yet feasible.
The technical concept has been likened to a consumer app that can identify trees or flowers from an uploaded photo. “Geometric search is mature. it’s deployed. it is ready to be applied to this problem. ” said Julian Chultarsky. a technical account manager at Physna. a Columbus. Ohio-based company that develops such technology.
Still, even supporters of regulation say they do not expect the approach to be a magic shield.
The Association of 3D Printing backs the New York and California legislation, but its executive chairman, Bill Decker, said it’s not going to work. “It’s more of a political statement than anything else,” he said.
Decker argued that criminals could still find ways to make guns from 3D printers, either by altering designs or taking printing projects elsewhere.
Critics from the digital rights world say the danger is that the technology could block too much — and for the wrong reasons.
“The more aggressive the technology becomes. the more likely that it also blocks unintended items. ” said Rory Mir. director of open access and technology community engagement at the Electronic Frontier Foundation. a nonprofit digital rights group. Some harmless objects, Mir said, might resemble gun parts. He pointed to examples like pipes that could look similar to firearm components and an S-shaped wall hanger that might resemble an auto sear trigger used to modify a semiautomatic weapon into a machine gun.
Mir said that “these sort of censorship algorithms don’t work. and they wind up capturing and blocking a lot of lawful speech.” He also warned that if print instructions are submitted for a cloud-based artificial intelligence search. it could risk the privacy of people’s artistic and proprietary creations.
Gun safety advocates, for their part, frame the fight as a move toward closing a legal loophole. They argue that 3D printers have created a pathway for people who cannot legally purchase firearms — including children or convicted felons — to nonetheless obtain them. Everytown for Gun Safety says eleven states already generally prohibit 3D-printed guns. and six additional states require them to receive serial numbers.
Samuel Levy, director of policy advocacy at Everytown for Gun Safety, said that blocking the actual 3D printing of firearms could make it harder for people to ignore existing state laws.
“3D printing really is the new frontier of the fight against ghost guns,” Levy said.
The National Rifle Association might partly agree that 3D printing is changing the landscape, but it opposes the policy.
John Commerford. executive director of the NRA Institute for Legislative Action. said in a statement that “Despite desperate fear-mongering campaigns. homemade firearms are nothing new — they are a proud. time-honored American tradition dating back to the founding of our Republic.” He added that “these measures only restrict responsible Americans — who do follow the law — from participating in constitutionally protected activities.”.
The human stakes are straightforward even as the technical debate grows: supporters want 3D printing to stop becoming an end-run around serial numbers and background checks, while critics fear a new kind of automated gatekeeping that could reach beyond weapons and into everyday creativity.
The clock now is less about a single courtroom fight and more about a timeline aimed at 2029 — and about whether the technology New York is trying to bake into printers will work narrowly enough to prevent harm without sweeping too broadly.
New York law 3D printers ghost guns firearm blocking technology privacy concerns Everytown for Gun Safety Electronic Frontier Foundation Association of 3D Printing NRA Institute for Legislative Action