The Executor 546 is a weapon attachment featured in Call of Duty: Modern Warfare 3 (2022) and Call of Duty: Warzone 2.
It is one of the Barrel attachments available in MW3.
The Executor 546 is a Weapons Platform Specific Attachment, which means it is only usable within its specific Weapons Platform.
Here's how to unlock the Executor 546 attachments in COD Modern Warfare 3 and COD Warzone 2: Get the Victus XMR to Level 15.
Here you can find the list of Weapon Blueprints that include the Executor 546 attachment in COD Modern Warfare 3 and COD Warzone 2: