My reading of the 2nd amendment is that it prevents the Federal government from making ANY restriction on civilian firearm ownership. What it does allow is for a state to decide whether it considers its civilians to be members of the state militia (not reserves) and as such arm itself as a last line defense force, and what weapons they should purchase for themselves (regulated militia).

So then by that rationale we can't prevent anyone from having a nuke, or a bazooka, RPG, Gatlin-like machine guns (Puff the magic dragon)! No, I think that's the loosest interpretation ! I don't think it'll fly.

Hey I can justify a air cannon with the same rationale - my house might get attacked by a mob after a natural disaster and law enforcement breaks down !! it's just not realistic !! crazy
David (OFI)