What if a state banned guns, except for members of the national guard, who could possess them? You know the well-regulated militia; you need the SCOTUS to put a sharp point on the second and this is one way of doing it. More words were spent on the first well-regulated militia part of the 2nd, than on the shall not be infringed part and it would not infringe, since militia members (national guard) would be free to possess arms. Of course, the state would make provisions for the 4% of the population that hunted, with hunter safety courses and weapon rentals from the state hunting armory during hunting season and after that they would turn the gun back in. Signs at the state borders could warn visitors that it is a $10,000 dollar fine to bring a gun into the state for the first offense and they could reduce taxes quite a bit by snagging morons with out of state plates!
It would be no different than pot or abortion laws, one state it is legal and in the next state it is years in prison.