I don’t have a big issue with a bump stock ban.  It’s a cool way of turning a semi auto into a full auto, which makes it illegal.  The only way full auto could be useful is for crowd control and then only as long as it takes to empty the mag.  Then What?  If crowd control is my objective, I must be in fear of my life, which means the other side is probably armed.  If I wound 20 people on the other side, I suspect they’re shooting back.  Can I switch mags before I’m wounded?  or killed?