@divVerent @zeri @tofugolem I reckon a "real assault rifle" would be anything good for a governmental assault.

An AR-15 is a semi-automatic rifle and the government doesn't use it for assaults, therefore it's clearly not an assault rifle.

A good rifle with select fire (semi-auto, 2 or 3 shot auto and optionally full auto (for that nasty crowd of assembled civilians)) would be a real, government approved assault rifle.