12 Shell Mag Attachment Guide
The 12 Shell Mag attachment in Call of Duty: Modern Warfare 2 and Warzone 2 is Weapons Platform Specific. In other words, this magazine is exclusive to a particular family of weapons.
How to Get the 12 Shell Mag
To unlock the 12 Shell Mag attachment in Call of Duty: Warzone 2.0, you need to upgrade the Bryson 890 to Level 21.