The Aim-Assist 406 is a weapon attachment featured in Call of Duty: Modern Warfare 3 (2022) and Call of Duty: Warzone 2.
It is one of the Comb attachments available in MW3.
The Aim-Assist 406 is a Weapons Platform Specific Attachment, which means it is only usable within its specific Weapons Platform.
Here's how to unlock the Aim-Assist 406 attachments in COD Modern Warfare 3 and COD Warzone 2: Get the SP-R 208 to Level 12.
Here you can find the list of Weapon Blueprints that include the Aim-Assist 406 attachment in COD Modern Warfare 3 and COD Warzone 2: