[FreeAtlanta]

There are some great youtube videos on how to make zip guns. Is it legal to make one in the US? It should be a state's right issue. Are there any states that allow it?

I watched one video where the guy made a zip gun out of stuff in his shop in about a minute or two, then he disassembled it because he said it was illegal to own.

[Carriage Hill]

Interesting videos. I just watched 2 and yes, I’d be very wary of possessing one, since it’s almost automatic prison time.

[OneWingedShark]

There are some great youtube videos on how to make zip guns. Is it legal to make one in the US? It should be a state's right issue. Are there any states that allow it?

I watched one video where the guy made a zip gun out of stuff in his shop in about a minute or two, then he disassembled it because he said it was illegal to own.

Not true; the federal government restrictions are from 1) the power of the interstate commerce clause, and 2) the power to tax. In Rock Island Armory vs. United States, the ATF lost big on the ability to regulate full-auto firearms because 1) their power was taxation-based, and 2) they would not issue the tax-stamp for any new manufacture, which 3) negated all their authority in the matter. The Judge's reasoning was such that the ATF did NOT appeal the case, it is said, because they feared a loss in a circuit-court [meaning multiple states].