The Liberator

Register: Seriously. That's all a Liberator is: a particularly crappy pipe, because it is made of lots of laminated layers in a 3D printer. Attached to the back of the pipe is a needlessly bulky and complicated mechanism allowing you to bang a lump of plastic with a nail in it against the end of the pipe. An actual gun barrel is a strong, high quality pipe - almost always made of steel or something equally good - capable of containing high pressure gas. It has rifling down the inside, making it narrow enough that the hard, tough lands actually cut into the soft bullet jacket (too small for the bullet to actually move along, unless it is rammed with massive force). At the back end there is a smooth-walled section, slightly larger, into which a cartridge can be easily slipped. (...) It's not a gun. It's not even a 1950s style "zip gun": the pipe used for zip guns is a lot better than you can make in a 3D printer, and is correspondingly more effective - and safer. (...) Even so, we can expect a lot more cobblers to get said about the Liberator, 3D printing etc in the near future.