California Bill Would Force 3D Printers to Block Gun Files With State-Approved Detection Technology

Summary

California Assembly Bill 2047, introduced on February 17, 2026, mandates that 3D printers sold or transferred in the state incorporate state-approved "firearm blocking technology" to prevent the printing of firearms or related parts. The bill outlines a process for the California Department of Justice (DOJ) to establish standards, certify detection algorithms by January 1, 2028, and publish lists of compliant printers, with prohibitions on non-compliant printer sales beginning March 1, 2029.