California wants to block ‘ghost guns.’ It may end up censoring 3D printers

Full story Legislation in California aimed at preventing the production of 3D-printed firearms has civil liberties groups raising an alarm. The bill, A.B. 2047, would require businesses that sell 3D printers in the state to alter their software to detect and block the printing of untraceable firearms, commonly referred to as “ghost guns.” The legislation would also make it a crime to “knowingly disable, deactivate, uninstall, or otherwise circumvent any firearm blocking technology” on a 3D printer. While proponents of the bill say it is necessary to prevent the spread of unregulated firearms, critics — including the Electronic Frontier Foundation...