Uzi
.308 Win
Nobody needs 30 rounds (turns to 20 rounds). Nobody needs 20 rounds (turns to 10 rounds). Nobody needs 10 rounds (turns to 5 rounds). Nobody needs 5 rounds (turns to 2 1/2 rounds). Nobody needs 2 1/2 rounds (turns to 1 1/4 rounds). Nobody needs dangerous ammunition capable of shooting out of a rifled barrel (confiscates all guns).