Sam Harris (not that I'm impressed with him generally) criticized the focus on heavy duty guns. He said a hunting rifle could be about as dangerous from the right vantage point.
Even so, it's better to limit the array of choices the potential attacker has. To have it as a collector's item is probably the only legitimate use for a machine gun.
Even so, it's better to limit the array of choices the potential attacker has. To have it as a collector's item is probably the only legitimate use for a machine gun.