Last week, Philadelphia became the first city in the United States to pass a 3D-Printer ... AR-15 rifle butt-stock kit and a bullet button (for California). Using a punch kit, screwdriver and vise ...

You’d be hard-pressed to find more ardent supporters of 3D printing then we here ... Sure there are flexible filaments that can give a printed wheel a bit of grip, but they came with their ...

this 3D printed AR-15 lower receiver is the only part of an AR-15 that contains the ID markings and serial number. Legally, the AR lower is the gun, and requires a background check to purchase ...