Oh, so he has an evil "sniper rifle"?
You do realize that most hunting rifles fire rounds MUCH more powerful and with significantly more range than a typical .223 "assault weapon" round.
He doesn't need an assault weapon
That's his problem, not mine.
and I don't think anyone else does
Since 1994, there have been around 1 million AR15's sold to Americans. That doesn't count other semiautos, nor those made before then. So how exactly do you propose to steal millions of rifles from Americans?