the piece on a group of nerds that have created a 2 x 2 machine that makes guns? Put in the raw material, select the gun you want to make (they did the coding, including firing pins) and in a couple of hours, AR-15, 9mm, 380's hundreds of types of guns. I'm sure it could be programmed to make shell casings as well. Talk about the preppers dream machine to rule the post apocalyptic world.
