AR-15s are Not assault weapons but are needed by citizens of the USA for protection. Real assault weapons have an automatic mode. Legal guns, not including for the police and military, are semi-automatic. These guns only shoot one bullet at-a-time.
See AR-15s and assault weapons 2016 Guns such as AR-15 and AK-47 were assault rifles decades ago, which ended in the 1950’s. Soldiers since 1960 have used automatic guns, some shoot 400 or more rounds per minute. If you were able to shoot 1 round per second, that would only be 60 per minute. Because of the recoil and shooter’s ability, it would be difficult to shoot even 40 rounds per minute from a semi-automatic pistol or rifle.
Rifles such as the AR-15 and AK-47 are not assault rifles but are good for civilian defense. These rifles are owned and used by many bodyguards of rich families and politicians. ALL US citizens need the right to own and carry guns for self-protection, not just the rich and politically well connected.