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The .500 Overpressured +P is a gun attachment found under the Ammunitions attachment category of Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the .500 Overpressured +P and find out all compatible guns for this attachment!
List of Contents
The .500 Overpressured +P attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:
| Weapon | Required Level |
|---|---|
 Basilisk
|
Raise the Basilisk to Level 24 |
Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the .500 Overpressured +P attachment, early.
Once you unlock this feature, modify your chosen gun at the Gunsmith and select the .500 Overpressured +P from the Ammunition 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 | ||
|---|---|---|
|
Basilisk
|
||
| 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 | |||
| Best MW3 Ammunition |
|---|
| This list is under construction! |
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