Well, by all means we should not put any obstacles in the path of a psychotic who is bent on murdering hundreds of people. After all, the guy in Vegas was a well regulated militia, and he had the constitutional right to buy dozens of rifles that were easily converted to fully automatic. And, the next one may have the right to silencers if congress passes a bill in front of them now.
How do you know he was psychotic?
Reports are now saying that the weapons were NOT automatic. He used bump-fire slide stocks.
You have no idea what a suppressor is, do you?
More stupidity is all you can supply.