[null and void]

The common man can not afford a 3D printer.

I have one, and I'm a commoner.

Granted it's not a metal 3D printer, but I can make the parts out of a low melting polymer (even wax!) and make patterns for lost wax casting. Firearms were made of brass or bronze for centuries.

They'd be just fine for lighter loads, which could then be used to steal steel weapons...

[Big Red Badger]

Lost Wax Casting,
Haven’t heard that since
High School!