GoKawiilNewsom signs law requiring future 3D printers to block gun-file printing in California
California Governor Gavin Newsom has signed legislation requiring 3D printer makers to build in firearm-blocking technology once ASTM International finalizes an industry standard for such detection. The law only applies to printers sold after a standard exists, leaving current devices unaffected, and California becomes the second state after New York to pass such a rule, with Colorado and Washington considering similar bills. The California DOJ must check quarterly for a published standard from mid-2027 through mid-2029, after which it is no longer obligated to keep checking.