Good luck un-inventing gunpowder and steel.
They’ll have to demand the registration of all machine tools next.
They need a law for registering fertilizer bombs and 5 ton trucks that will be used to kill people too.
http://www.wikihow.com/Make-a-Real-Gun
Didn’t GM Guide Div. stamp out Liberty Guns (IIRC) during WWII that were dropped behind enemy lines?
Sure, you couldn’t hit the broadside of a barn unless you were standing right next to it, but I guess it worked.
The Navy is working on rail guns. A simple concept really, and we seem to all hell bent on making batteries more powerful and lighter and more compact all in the name of global warming.
So, gun powder isn’t really needed when you get right down to it. Ferrous metals, copper and electrical power. More or less. And maybe a Raspberry Pi for a controller.
Liberals are so stupid on a great many things.