A home-made gun, aka a "zip gun"[1] is much easier to make -- but like you said, it doesn't sound nearly as scary as "any criminal can, with the press of a butt

A home-made gun, aka a "zip gun"[1] is much easier to make -- but like you said, it doesn't sound nearly as scary as "any criminal can, with the press of a button, print out a gun at home!" (nevermind that it's not as simple as pressing a button, and they only work for a shot or two anyway.) [1]: https://en.wikipedia.org/wiki/Improvised_firearm https://en.wikipedia.org/wiki/Improvised_firearm