C400 Door Knocker

The C400 Door Knocker is a weapon attachment featured in Call of Duty: Modern Warfare 2 (2022) and Call of Duty: Warzone 2.

It is one of the Muzzle attachments available in MW2.

The C400 Door Knocker is a Universal Attachment, which means it can be used across all Weapons Platforms in the game.

Pros Melee Damage

Cons Aim Down Sight Speed

C400 Door Knocker

This breacher muzzle brake gives the edge in close-quarters combat with increased melee damage.

C400 Door Knocker Info

Attachment Type Muzzle

Release Game Launch

How To Unlock Get the M16 to Level 5

Unlocked Via

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Here's how to unlock the C400 Door Knocker attachments in COD Modern Warfare 2 and COD Warzone 2: Get the M16 to Level 5.

Here you can find the list of Weapon Blueprints that include the C400 Door Knocker attachment in COD Modern Warfare 2 and COD Warzone 2: