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The XRK Heavy V4 is a gun attachment found under the Trigger Actions attachment category of Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the XRK Heavy V4 and find out all compatible guns for this attachment!
List of Contents
The XRK Heavy V4 attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:
| Weapon | Required Level |
|---|---|
 Renetti
|
Raise the Renetti to Level 7 |
Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the XRK Heavy V4 attachment, early.
Once you unlock this feature, modify your chosen gun at the Gunsmith and select the XRK Heavy V4 from the Trigger Action attachment slot of your weapon. This should activate its Armory Unlock contract, allowing you to complete Daily and Bonus Challenges to get it earlier.
| Guns That Can Use the Attachment | ||
|---|---|---|
|
Renetti
|
||
| Attachments By Type | |||
|---|---|---|---|
| Barrel | Stock | Ammunition | Muzzle |
| Rear Grip | Optic | Underbarrel | Magazine |
| Receiver | Laser | Comb | Trigger Action |
| Guard | Bolt | Arm | Rail |
| Carry Handle | Lever | Loader | Wire |
| Conversion Kit | |||
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