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The Auto Assault-12 (AA-12) is a shotgun developed in 1972 by Maxwell Atchisson. The current 2005 version has been developed over 18 years since the patent was sold to Military Police Systems, Inc. The original design was the basis of several later weapons, including the USAS-12.

The weapon is featured in several installments of the Tom Clancy's Rainbow Six Franchise and is designated as the ACS12.

Siege[]

"This 12-gauge combat shotgun is fully automatic and drum-fed. Great for blasting holes in walls and possesses surprisingly low recoil and muzzle rise."
— In-game description

The ACS12 is a shotgun featured in Tom Clancy's Rainbow Six Siege, introduced in the Operation Para Bellum expansion. It is available for use by Maestro, Alibi and Azami.

Overview[]

The ACS12 boasts the highest round capacity of any shotgun in the game. Though slow, the ACS12 also features a fully-automatic firing mode. In addition, the default iron sights are identical to the MP7 in that they obstruct vision minimally when aiming down sights.

The weapon works like an automatic DMR thanks to the slug rounds, but the relatively slow TTK at distance calls for precision shots by aiming at the head of the target. However clocking in at 69 damage is enough to downright kill any armor type in two shots.

Same as the TCSG12 and the BOSG.12.2, the slug rounds of the ACS12 have high destruction, making it useful for both creating rotations and lines of sight.

Pros[]

  • High single shot damage
  • High destruction capabilities
  • Relatively low recoil

Cons[]

  • Very low rate of fire
  • Steep damage dropoff

Weapon Attachments[]

Sight
Grip
Under Barrel

Gallery[]

Patch Changes[]



Extraction[]

"This 12-gauge combat shotgun is fully automatic and drum-fed. Great for blasting holes in walls and possesses surprisingly low recoil and muzzle rise."
— In-game description

The ACS12 is a shotgun featured in Tom Clancy's Rainbow Six Extraction. It is available for use by Alibi after reaching Operator level 3.

Overview[]

The ACS12 performs exactly the same as its counterpart in Tom Clancy's Rainbow Six Siege. It boasts the highest round capacity of any shotgun in the game. Though slow, the ACS12 features a fully-automatic firing mode.

The weapon works like an automatic DMR thanks to the slug rounds, but the relatively slow TTK at distance calls for precision shots by aiming at the head of the target.

Pros[]

  • High single shot damage
  • High destruction capabilities
  • Relatively low recoil

Cons[]

  • Very low rate of fire
  • Steep damage dropoff

Weapon Attachments[]

Sight
Grip
Under Barrel

Gallery[]


Trivia[]

  • The ACS12 in both games may have been modified to shoot from a closed-bolt configuration, since the bolt is always forward at rest.
  • The charging handle is not pulled back far enough during a full reload.
  • The real-life AA12 does not use 30 round drum magazines, but rather 20-round and 32-round.
  • With the release of Operation Steel Wave the ACS12 was converted to slugs rather than pellets and also featured a weak damage output that was later 'buffed' to 59 points of damage.
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