Expands magazine capacity to hold 30 rounds.[sic] Slightly reduces spare rounds carried, slightly slower reload speed.
–In-game description
20rd Drum
20rd drum angled
Attachment Type Other
Kills Required 1000
Note Reduces reserve to 40.
Increases reload time to 3.7s loaded, 4.7s unloaded.
Reduces walkspeed to 13.5.
Reduces aiming speed to 11.9.

The 20rd Drum, or 20 Round Drum, is an attachment available exclusively to the AA-12. It is unlocked by attaining 1000 kills or by purchasing it with credits.


The AA-12 wasn't originally designed for just a stick magazine. To enhance the ability of the AA-12's function as a combat shotgun, the option to use a large drum magazine would be available. Much like other weapons in history with drum magazines, the extra bulk of the magazine would be frowned upon, and is illegal in some jurisdictions.


General Information

The 20rd Drum provides a tremendous increase in magazine capacity at the cost of mobility, reload speed, and a small amount of reserve ammunition.

Usage & Tactics

With the extended magazine, the AA-12 transitions from being a mobile hit-and-run weapon to a more defensively oriented weapon. The bulk of the magazine will slow the player down, making them less able to react to a rapidly changing situation, and overall making it much more difficult for them to stay ready in protracted engagements. Compared to something like the Saiga-12, though, the AA-12 becomes a much better weapon for sweeping out rooms with this attachment.


The 20rd Drum is an optimal choice for aggressive defenders, and makes up for some of the AA12's shortcomings. However, it's very easy to expend more ammo, especially when trying to pepper targets at range.


  • This is the second distinct extended magazine attachment to be added, after the 33rd Mag.
    • This also makes it the third extended magazine attachment in the game.


Optics Primary

ACOG Scope - Animu Sight - Barska Electro - C79
Comp Aimpoint - Coyote Sight - DDHB Reflex - EOTech 552
EOTech XPS2 - Hensoldt 3x Sight - Kobra Sight - Leupold M8-2x
Leupold M8-6x - Lyman Sight - M145 - MARS - OKP-7 - Pilad 3
PK-A - PKA-S - PM II - PSO-1 Scope - PSO-1M2 Scope
PU-1 Scope - Reflex Sight - TA01 ACOG - TA11 ACOG
TA33 ACOG - VCOG 6x Scope - Z-Point - Extended Stock


Delta Sight - Full Ring Sight - Half Ring Sight - Mini Sight

Barrel Flash and Sound Suppression

ARS Suppressor - Flash Hider - PBS-1 Suppressor
PBS-4 Suppressor - R2 Suppressor - Suppressor
Osprey Suppressor - Sionics Suppressor

Recoil Management

Compensator - Muzzle Brake - Muzzle Booster

Barrel Modification

CTAR Barrel - Extended Barrel

Underbarrel Grips

Angled Grip - Folding Grip - Stubby Grip - Vertical Grip


Flashlight - Laser - Green Laser

Other Aiming Aids

Boom Stock - Extended Stock - G Stock - Raffica Stock
Ballistics Tracker - Laser - Green Laser

Backup Sights

Canted Delta Sight - Canted Iron Sight


20rd Drum - 33rd Mag - Extended Magazine - Pro Mag
30rd Mag - 50rd Drum

Ammo Regular Ammunition

Armor Piercing - Hollow Point

Shotgun Ammunition

Buckshot - Flechette - Birdshot - Slugs

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