Also gun printing isn't scary stuff nor is it that controversial.
You can walk into a home depot and make cheap guns using a lot of simple easy to get items. You'd be spending more money printing out a gun than you would just buying one.
The full spectrum of 3d printing with liquefied plastics is primarily for prototyping if anything. Also the plastics that are used are more than capable of holding up to a quality standard, Lalam. Its young but in just a short time it will become even greater in performance.