Federal HB4143 prohibits the distribution of 3D printer plans for firearms.
Federal HB4143, the 3D Printed Gun Safety Act of 2025, amends chapter 44 of title 18, United States Code, to make it unlawful to distribute digital instructions for 3D printing firearms. This includes Computer Aided Design files or other code that can automatically program a 3-dimensional printer to produce a firearm or complete a firearm from an unfinished frame or receiver. The bill aims to curb the proliferation of untraceable firearms, which interfere with lawful commerce and significantly contribute to gun crime.
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