AA-12

The Auto Assault-12 (AA-12) is an automatic shotgun in Call of Duty: Modern Warfare 2.

History
The current 2005 version was in development for over 18 years since the patent was sold to Military Police Systems, Inc. While there have been combat shotguns developed in the past, the AA12 is touted as the first shotgun designed for military use from the ground up, rather than being based on a civilian version. The original design was the basis of several later weapons, including the USAS-12 combat shotgun. The weapon is selective fire, operating as a semi-automatic, or in fully automatic mode at 300 rounds per minute. It is compatible with either a 8-shell box magazine, 20-shell drum magazine or a 32-shell drum magazine.

Call of Duty: Modern Warfare 2
So far, the AA-12 is known to be capable of accepting the Red Dot Sight and Heartbeat Sensor. It has an 8-round magazine capacity, balancing the weapons power and speed, but may have a capacity of 70 extra shells, and fires full-auto. The AA-12 empties its magazine far more quickly than it reloads as the magazine needs to fit onto the magazine support, and then slide up into the magwell. It is playable with a silencer.