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The Adjustable Stock (sometimes referred simply to as Stock) is an attachment and a campaign perk featured in Call of Duty: Black Ops II, Call of Duty: Black Ops: Declassified, Call of Duty Online, Call of Duty: Advanced Warfare, Call of Duty: Black Ops III, Call of Duty: Infinite Warfare, Call of Duty: Black Ops 4 and Call of Duty: Mobile. It allows the player to move faster while aiming down the sights, akin to the perk Stalker from previous games.

Call of Duty: Black Ops IIEdit

"Move faster when aiming."
Create-a-Class description

The attachment is available for submachine guns, light machine guns, shotguns, and assault rifles. The Adjustable Stock gives a similar effect as the Stalker perk from Call of Duty: Modern Warfare 3, improving the player's movement when aiming down the sights. 

The attachment's effect is much more significant on the Assault Rifles and LMGs, which benefit from a movement increase much larger than the SMGs and shotguns do. Considering that SMGs and shotguns already have good strafing speed to begin with, this attachment is a rare sight on those weapons. Assault rifles are the overall biggest beneficiary of the Stock's effect, since they are mid-range weapons that are of an average weight but have poor strafe speeds that don't correspond well with other handling traits assault rifles have. While the LMGs stand a lot to gain from the attachment as well, some players can play fine without it when deploying the LMG in a very defensive manner, which some players will consider to be the optimal way to use LMGs.

In the Zombies map Origins, the MP40 has this attachment via the Mystery Box.

Weapon Category Aim Down Sight Movement Speed
Assault Rifles 88%
Submachine Guns 100%
Light Machine Guns 72%
Shotguns 88%


Call of Duty: Black Ops: DeclassifiedEdit

"Move faster while aiming."
— In-game description.

The Adjustable Stock attachment returns in Call of Duty: Black Ops: Declassified.

Call of Duty OnlineEdit

The Adjustable Stock returns in Call of Duty Online under the name Tactical Stock.

Call of Duty: Advanced WarfareEdit

"Move faster when aiming down the sights."
Create-A-Class description.

The attachment returns in Call of Duty: Advanced Warfare, and is simply referred to as Stock (in earlier stages it was known as Lightweight Stock). It is available for most primary weapons.

Call of Duty: Black Ops IIIEdit

The Stock returns in Call of Duty: Black Ops III, but the increase in movement speed while aiming is less drastic on assault rifles, sniper rifles, and LMGs than in previous games. All weapons in these categories cannot move fast enough to keep Ghost active even when aiming with the Stock, while SMGs and shotguns cannot do so without the Stock.


Call of Duty: Infinite WarfareEdit

"Increase maneuverability while aiming down sights"
— In-game description.

The Stock attachment makes an appearance in Call of Duty: Infinite Warfare, allowing higher maneuverability whilst aiming down sights. [1]


Call of Duty: MobileEdit

The Stock returns in Call of Duty: Mobile.


Call of Duty: Black Ops IIEdit

  • The icon used in the attachment is the stock used on the SWAT-556, which is a Magpul CTR Carbine Stock. This stock is also seen on the S12


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