If they strike down federal gun regulation, they will eliminate regulations on machineguns and artillery pieces too, the feds can regulate calibers and functions. The 2nd says arms, not guns and was for military purposes, back in the founders day arms meant rockets, cannon and grenades too, not just guns. Ya can't fight invading Russians without at least an RPG a rocket propelled grenade, arms. So will these morons get rid of federal regulation and America can have a free for all and get seriously armed to the teeth?