The Liberator is the world’s first 3D-printed plastic handgun. It’s almost entirely made from plastic, formed of 16 components made inside a Stratasys Dimension SST 3D printer. The only non-printed piece is a common hardware store nail used as its firing pin.
The design is complied with the Undetectable Firearms Act by inserting a six ounce cube of non-functional steel into the body of the Liberator, which makes it detectable with a metal detector. Watch the video below.