The future of CAD and 3D printing will arm citizens
youtube.comPeople will be sad when they realize the barrels are not rifled. That means these are plastic zip guns.
It's not hard to add a rifling to the model is it? It seems like they are prototyping, testing, and incrementing designs.
It is impossible to add rifling to a plastic barrel that has metal projectiles fired through it at the speed of sound.
These are muskets.