California Law Requires 3D Printers to Include Firearm-Blocking Technology

New California Legislation

California Governor Gavin Newsom signed a bill into law requiring manufacturers to integrate firearm-blocking technology into 3D printers sold in the state. This requirement will take effect once ASTM International publishes an industry standard for such technology. The law focuses on regulating the sale and transfer of new 3D printers, not their ownership or use, and does not require retrofitting existing devices.

Standardization and Implementation Timeline

The implementation of this law is contingent on ASTM International, a non-profit standards organization, publishing a standard for firearm-blocking technology. The California Department of Justice (DOJ) is mandated to check for this standard quarterly between July 1, 2027, and July 1, 2029. If no standard is published by the latter date, the DOJ is no longer required to check, potentially halting the process for establishing regulatory guidelines.

Technical Challenges and Concerns

Detecting firearm print files presents technical challenges. Current methods involve matching files against databases or using trained models. Database matching can be circumvented by modifying files, while AI analysis is prone to false positives, potentially blocking legitimate prints of common parts. The Electronic Frontier Foundation has expressed skepticism about the effectiveness of the mandated technology.

Addressing Community Feedback

The California law attempts to address concerns raised by the 3D printing community regarding the feasibility and scope of such regulations. By focusing on new printers and tying implementation to an industry standard, the law seeks to mitigate some of the issues related to retrofitting and overly broad restrictions.