The adaptive sub carbine is a cross between a M1911 pistol and an Uzi; the result is a high powed machine pistol in .45 ACP. It is reliable and rugged and uses the operating method of the uzi. It has a fire rate of 1200 rounds a minute and is fed from a 15 round double stack magazine.
The rate of fire of the AS-12 is one of the biggest complaints on the firearm. Listed as approximately 1200 rpm (rounds per minute), though in reality, it is closer to 1600 it is capable of emptying the entire 32-round magazine in less than four seconds, which many users view as a setback. Rate of Fire will also vary depending on which grain of ammo is used.