[donquixote99]

As I read the Constitution's ill-written political albatross, the 2nd amendment, your right to bear arms depends on you being of good enough character and trainable enough that the local militia would have you. That translates very well into the background and training requirements you mention. The assault weapon ban is a bit trickier to get past the old 2nd A, though of course the right Supreme Court would find a way. The answer is probably in that phrase 'well-regulated.' I'm willing to say you have to be quite regulated indeed to rate an assault weapon.