New York Law Targets 3D-Printed Ghost Guns With New Tech

New York has enacted a first-of-its-kind law requiring 3D printers and CNC machines sold in the state to incorporate technology that blocks the printing of firearm components. Signed by Governor Kathy Hochul in May 2026 as part of the state’s executive budget, the legislation represents a novel shift in gun regulation — targeting the manufacturing equipment rather than the individuals who produce untraceable “ghost guns.”

The New Regulatory Approach

The law, embedded in Part C of the 2026-2027 executive budget bill (S.9005/A.10005), would mandate that 3D printers and CNC machines include a “firearms blueprint detection algorithm” that scans every print file and refuses to print flagged designs. A similar bill, AB-2047, is under consideration in California, carrying $25,000 penalties and a March 2029 compliance deadline.

According to AP News, about one-third of U.S. states have already taken steps to ban or regulate build-it-yourself firearms that lack serial numbers. What makes New York’s effort unique is its focus on the equipment used to produce the weapons, not the people who make them.

Scope and Penalties

The law’s reach extends far beyond hobbyist printers. It covers CNC mills, lathes, and machining centers used by repair shops, small manufacturers, and fabrication labs. Key provisions include:

• Blocking technology mandate: Printers must scan files through a government-approved detection algorithm
• In-person sales only: 3D printers cannot be purchased online or via mail order
• Criminal penalties: Possessing or distributing design files for firearm components with intent to print would be a Class E felony, punishable by up to four years in prison
• Manufacturer penalties: $10,000 per violation for selling non-compliant devices

The mandate for blocking technology would not take effect until 2029 — or later if a study group determines the technology is not yet feasible.

The Ghost Gun Problem

Privately made guns recovered in crimes and submitted to federal authorities rose from approximately 1,600 in 2017 to nearly 27,500 in 2023, according to a U.S. Department of Justice report. In a high-profile New York case, police say a 3D-printed gun was likely used in the 2024 murder of UnitedHealthcare’s CEO.

Samuel Levy, director of policy advocacy at Everytown for Gun Safety, told AP News that “3D printing really is the new frontier of the fight against ghost guns.” Eleven states already generally prohibit 3D-printed guns, and six additional states require serial numbers.

Can the Technology Work?

There is sharp disagreement about whether the required detection technology is technically feasible. Julian Chultarsky, a technical account manager at Physna, a company that develops geometric search technology, says the technology is ready: “Geometric search is mature, it’s deployed, it is ready to be applied to this problem.”

But Bill Decker, executive chairman of the Association of 3D Printing — which supports the legislation — told AP News that “it’s not going to work. It’s more of a political statement than anything else.”

As Techdirt notes, the law would apply to open source firmware like Marlin, Klipper, and RepRap, which are maintained by volunteers without resources for compliance. Phillip Torrone of Adafruit described the technical challenge: identifying every possible firearm component from raw design files while not flagging pipes, tubes, brackets, or gears that share geometric properties with gun parts is “a classification problem with enormous false positive and false negative rates.”

Privacy and Constitutional Concerns

The Electronic Frontier Foundation has been a vocal critic. Rory Mir, EFF’s director of open access and technology community engagement, told AP News that “these sort of censorship algorithms don’t work, and they wind up capturing and blocking a lot of lawful speech.”

In a detailed analysis, the EFF warned that the law creates a surveillance infrastructure on personal manufacturing devices. Critics argue that once the scanning infrastructure exists, the list of forbidden designs could be expanded to include other items — drug paraphernalia, lockpicking tools, or patent-infringing designs.

The law also raises constitutional questions. Design files have been recognized as protected speech under the First Amendment since Bernstein v. United States (1996). The NRA’s John Commerford argues that “homemade firearms are nothing new — they are a proud, time-honored American tradition dating back to the founding of our Republic.”

What’s Next

The 2029 implementation deadline gives a study group time to determine whether the technology can actually work. Meanwhile, California’s AB-2047 is moving through its legislature, and other Democratic-led states may follow suit.

Even if the technology works perfectly on new printers, millions of printers already in circulation would remain unaffected, and design files are already widely available online. As the State of Surveillance analysis notes, “the mandate solves nothing. But it surveils everything.”

The coming years will determine whether this novel regulatory approach — regulating manufacturing equipment rather than people — becomes a template for other states or a cautionary tale about the limits of technological enforcement.