Of course it isn't. The point being, if your goal is to prevent murders/mass shootings, you should probably look at the weapon of choice in murders/mass shootings. Hell, you may as well say "I want to prevent murders/mass shootings. Ban rotary phones!!!" I'd respond "Uh, badluck, virtually no one uses a rotary phone to kill anyone." Your obvious reply would have to be "Yeah but banning handguns isn't practical so we have to start somewhere!!!"
Which, as you know, is dumb.