I am ok with this ban semi automatics but allow revolvers. (I have no doubt that somehow I have screwed up some gun definiton here so I will now be chastised for it by a gun nutter).
I inherited my father's semi-automatic .22 long-rifle Mossberg when I was about 14. My school-mate's father took us to the rifle range. It was "semi-auto" because you only need to pull the trigger to fire another round and then another. That particular rifle would jam with maybe 10 or 12 bullets in the spring-loaded tube, after firing it about 7 or 8 times.
I think your standard AR-15 will fire as fast as you can twitch your finger, and the .222 or .223 caliber rounds will tumble, or otherwise cause great damage. That's why they invented the M-16 -- precursor of the AR-15 -- to maim and kill North Vietnamese and Viet Cong. It wasn't meant as a sporting proposition. It wasn't meant to be a target rifle or a hunting rifle. It was meant to kill people.
After seeing what the pro-gun folks chose to put in the Oval Office this last go-around, do you really feel comfortable that they're sane enough to be trusted with those types of weapons? Maybe they are, maybe they ain't.
Like I said -- I was a fence-sitter, even thinking to acquire one. So far, they've been used to kill people in events untethered to political movements or imperatives to upend an oppressive government.
I'm conflicted, because I see things likes this weekend explosion of Tweets. You'd think people would get the picture from the accumulation of facts and events since 2016. This is not a "successful" presidency. It's a criminal becoming unhinged, chosen by people who think amateurism is a valid expression for the will of the people. The rest of us aren't "the people". We're part of a vast conspiracy, including all the media except FOX, rabid in our desire to take away their freee-dums and allow women to have abortions. All the rest of us are the bad guys.