3D Printed Gun Safety Act of 2025

This bill makes it illegal to distribute online digital instructions (like 3D printer files) that can automatically program a 3D printer to create a firearm or complete a firearm receiver. It directly affects individuals who share such files online, including those creating or distributing "ghost gun" schematics. The key mechanism prohibits the internet distribution of these specific digital files under federal law, aiming to prevent untraceable firearms. This addresses the concern that 3D-printed guns lack serial numbers, making them difficult for law enforcement to trace after crimes.