California bill requiring 3D printers to block firearm printing becomes law

California Gov. Gavin Newsom has signed into law a bill that requires 3D printer manufacturers to include firearm-blocking technology in their products once an industry standard is published by ASTM International. This makes California the second state to enact firearm restrictions on 3D printers following New York. Two other states, Colorado and Washington state, also have similar bills that would require “blocking features” moving through state legislatures.

Source: California bill requiring 3D printers to block firearm printing becomes law — existing machines are exempt, but mandate hinges on unwritten ASTM standard