As long as those laws or even bans, address criminal behavior and not perceived future criminal behavior.  A law banning bump stocks, accessories, or certain "scary" firearms addresses criminal behavior that *might* happen.  Not that I own or even desire to own something as gimmicky as a bump stock but banning me from purchasing one when I have not used one to commit mass murder is wrong and serves no purpose except to turn a non-criminal into a criminal.  The day I use one inappropriately you're free to ban me from having them and whatever else the law says I can't own after a firearms related conviction.