New York City Officials Push to Criminalize 3D-Printed Guns and Design Files

Manhattan DA Alvin Bragg's office recovered just 17 3D-printed and ghost guns across Manhattan in 2017. By 2024, that number had climbed to 438. That roughly 25-fold surge is now fueling the most aggressive state-level push against 3D-printed firearms in the country, with consequences that reach directly into makerspaces, home print farms, and file-hosting platforms.

Bragg laid out the stakes plainly to reporters last week, demonstrating how a $250 consumer printer and a few dollars' worth of parts can convert an AR-15 into an illegal machine gun. "We've moved from the iron pipeline to really the kitchen table pipeline," he said. He immediately leveraged that moment into pressure on Albany, calling on state lawmakers to fold a sweeping package of restrictions into the state budget, which is in active negotiations.

The package anchors Governor Kathy Hochul's 2026 State of the State agenda and is embedded in the FY 2026-2027 executive budget bill, S.9005 and A.10005. Its most technically far-reaching provision would make New York the first state in the nation to require 3D printer manufacturers to install a "firearms blueprint detection algorithm" in every machine sold in the state, with the firmware scanning each print job and blocking any file flagged as a firearm or component. The bill also criminalizes the unlicensed possession, sale, or distribution of digital design files, including STL and CAD blueprints, for guns and gun parts.

Bragg backed these proposals with direct industry pressure. After investigators found a substantial volume of weapon blueprints freely available for download, Bragg sent letters to major platforms demanding removal. Thingiverse responded by deploying automated detection tools to strip gun design files from its library. Bragg also called out Creality by name, noting that the Chinese printer manufacturer's machines had been seized by his office during active investigations and demanding the company prohibit firearm production in its user agreements.

The maker community's alarm centers on the detection algorithm itself. Adafruit's Phillip Torrone described the technical problem directly: "A firearms blueprint detection algorithm would need to identify every possible firearm component from raw STL/GCODE files, while not flagging pipes, tubes, blocks, brackets, gears, or any of the millions of legitimate shapes that happen to share geometric properties with gun parts." Torrone also warned that such blocking systems could require printers to stay connected to cloud services or locked behind vendor-controlled subscriptions, eliminating offline printing for anyone in the state.

The definitional risk runs alongside the technical one. The bill's language around "firearm components" leaves the scope of what triggers a violation dependent on how regulators interpret terms like "receiver" or "frame," which could sweep in parametric bracket designs, airsoft parts, or prop components with no weapons intent. Adafruit has called on lawmakers to amend the bill to preserve education, open-hardware development, and small-manufacturer activity.

New York is not acting in isolation. Washington State's HB 2320 and HB 2321 take a nearly identical mandatory-blocking approach, and California's AB 2047 would impose comparable requirements on printers sold there. Whatever text New York finalizes in this budget cycle is likely to set the template other states reach for first.