If you follow the .50 roundup, that would be the eventual result. That’s the gun grabbers’ real agenda.
My personal opinion of the 50 cal is that it is of limited use by civilian militia and so a ban on them would not be very damaging to the purpose of the second ammendment. BUt I don’t see why we should give up something like 50 cal rifles without getting something back in exchange. In the event of an armed uprising against the government, most of the fighting will occur in densely populated cities. Fully automatic assault rifles and machine pistols and grenade launchers are more useful. One could make the argument that in the rural areas the 50 would be invaluable. Well, maybe so, but the government has tanks and helicopters. A man with a barret 50 is no match against a tank or helicopter. And in a rural setting, there’s no hiding from a tank or a helicopter.