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California wants 3D printers to detect and block gun blueprints

Ellsworth Toohey
Jun 01, 2026
∙ Paid

3D Printed .22lr Small Handguns (roosydinharis/shutterstock.com)

California’s Assembly passed a bill on May 26 that would require every 3D printer sold in the state to run a “firearm blueprint detection algorithm” — software that scans each print job and refuses to make gun parts. Under Assembly Bill 2047, printers that can’t do this would be banned from…

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