[expat1000]

>>Does this mean that a person with a 3D printer can basically print out a zip gun?

An open bolt design like an Uzi is pretty easy to make - the barrel would be the toughest part. 3D printing would make it easier yet.

[Eye of Unk]

Somebody needs to come up with a modern day Liberty gun design, a design using all of the above equipment to build basically a modern day Liberty gun, capable of firing either single or double shot such as a derringer.

[GonzoGOP]

An open bolt design like an Uzi is pretty easy to make - the barrel would be the toughest part. 3D printing would make it easier yet.

You could certainly print up something like the liberator.

A polymer one shot in every pocket is a game changer for oppressive regimes.