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★ S6 New Guns: DTIR 30-06 | Kastov LSW
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The 4” Thunderfire is a gun attachment found under the Barrels attachment category of Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the 4” Thunderfire and find out all compatible guns for this attachment!
List of Contents
The 4” Thunderfire attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:
| Weapon | Required Level |
|---|---|
 Bas-P
|
Raise the Bas-P to Level 9 |
Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the 4” Thunderfire attachment, early.
Once you unlock this feature, modify your chosen gun at the Gunsmith and select the 4” Thunderfire from the Barrel 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 | ||
|---|---|---|
|
Bas-P
|
||
| 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 Barrels |
|---|
| This list is under construction! |
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