Aside from machine-guns made after 1986 and possibly nukes, you can own any weapon in most states. The things you mentioned are considered Destructive Devices a

Aside from machine-guns made after 1986 and possibly nukes, you can own any weapon in most states. The things you mentioned are considered Destructive Devices and require payment of a $200 tax stamp. Sure. If the government just preemptively nukes all American cities and towns then so be it. But to say that civilian firearm possession cannot slow, stop, or impede a tyrannical government is wrong.