Well, I remember from reading history, what a great accomplishment prohibition did for the gangs and that's who'd profit from this.

Your normal .45 glock would be quite expensive and lastly, they'd lose so many jobs that someone might be angry enough to use their "Illegal" weapon to take out the one who started it all.

You'd basically have anarchy as the cops (Even including the entire military couldn't stop all the break in and robberies.

Thus, I say "People kill people" I can do the same with a rock, brick, car, knife, sword or a simple tire iron. Sure, the gun gives distance, but in any case, it's the intent of the person who kills, not what they used.
