There is absolutely no reason for anyone to own such a device. Deer can't shoot back, and your regular semi automatic rifle will do just fine against a home invader. If our government becomes tyrannical, a few people with machine guns won't be the difference, the government can still crush any revolt, so that argument is moot as well. Banning such devices is common sense, not some assault on the right to own guns. Every time there is a mass shooting we grieve and promise to make changes without doing anything. It is time to wake up to reality and resist the NRA when implementing reforms.