Thread: Expert says 3D printed guns will not raise major concerns in NZ

Your average filament/extruding 3d printer is not going to be very successful, would almost be funny to watch from a suitably safe place though. You could put together something made from metal with no more than a few hand tools, faster than it would take to print a plastic one and much more functional.

There is technology around to print a functional lower or frame but it will cost you more than buying a proper one.