Series 4-MR

The Series 4-MR is a weapon attachment featured in Call of Duty: Modern Warfare 2 (2022) and Call of Duty: Warzone 2.

It is one of the Barrel attachments available in MW2.

The Series 4-MR is a Weapons Platform Specific Attachment, which means it is only usable within its specific Weapons Platform.

Series 4-MR Info

How to Unlock the Series 4-MR in MW2 and Warzone 2:

Here's how to unlock the Series 4-MR attachments in COD Modern Warfare 2 and COD Warzone 2: .

Weapon Blueprints That Equip Series 4-MR:

Here you can find the list of Weapon Blueprints that include the Series 4-MR attachment in COD Modern Warfare 2 and COD Warzone 2: