You cant regulate what goes on between someones ears. Many governments have tried. Our constitution does just the opposite.

No law will provide absolute assurance a mass murder wont happen. Any person of average intelligence can come up with more ways to kill than the government can come up with laws. A person bent on killing, without regard to his own life, is more than likely to succeed.

NFA didnt stop those two in North Hollywood from buying the parts and modifying their SKS rifles to full auto.

Bump stocks just replicate what happens when you hold a semiautomatic rifle loosely. Wait til someone demonstrates that On national tv.