ARs and similar are semiautomatic only and have always been. Do you really not know this by now?
I already proposed registering these weapons for "profiling, monitoring and prevention" and raising the age a person could acquire such. I am now expecting that you'll propose this about 5x in response to me as if it was your idea or that it somehow disagrees with one of my points. This is tiresome.
Making it difficult would have been a great idea in 1994, we settled for poorly crafted legislation that has made the problem worse with 20M+ of such weapons now in circulation. Before the AWB, almost no one had an AR, now it seems everyone does. Before the AWB, most people didn't know what an AR-15 was, when it sunset, everyone wanted one. See the problem? (Of course you don't) The "start somewhere" crowd completely ignores this. The toothpaste is out of the tube, simpler (incomplete) solutions such as limiting the ownership of such are no longer politically viable or pragmatically implementable. And the market has now made a seemingly infinite amount of variations such that banning by characteristic is no longer viable. Poorly crafted legislation, not gun people, not the NRA did this.
Getting individuals help to prevent violence in the first place should be the primary goal. Focus on that.