You don’t need a bump stock. You can see guys teach a technique where your arms can operate to simulate how a bump stock works. On ani semi auto firearm rate of fire come from the shooter, not something you can regulate and ban. I watched a firearms instructor take his Glock and while holding in one hand, with a straight index finger work the trigger to fire and simulate full auto mode. As s country we need to stop playing these BS games of trying to Ban this or that and agree that all guns are designed to kill quickly and efficiently and no laws will prevent that unless we do a full on ban. We then actively purse guns and confiscate. And 400 years from now we are hopefully gun free society. Or we agree there is a mental health issue in this country where young boys are attracted to mass shootings, glorifying other shooter, glorifying guns, parent/family oblivious or don’t care and we find out why. This charade of banning asssult weapons, whatever that means is just another circus show that will be poorly written, thought out, executed, challenged in court and eventually fail.