Call of Duty Modern Warfare 3 (MW3)

How to Unlock Cronen OP44 Attachment

The Cronen OP44 is a gun attachment found under the Muzzles attachment category of Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the Cronen OP44 and find out all compatible guns for this attachment!

How to Unlock Cronen OP44

Level Up Guns in MW3 Multiplayer Modes

The Cronen OP44 attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:

Weapon Required Level
Modern Warfare 3 -ISO HemlockISO Hemlock Raise the ISO Hemlock to Level 7

Complete the Attachment's Armory Unlock Challenge

Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the Cronen OP44 attachment, early.

Once you unlock this feature, modify your chosen gun at the Gunsmith and select the Cronen OP44 from the Muzzle attachment slot of your weapon. This should activate its Armory Unlock contract, allowing you to complete Daily and Bonus Challenges to get it earlier.

Armory Unlock Challenges

Cronen OP44 Compatible Guns

Guns That Can Use the Attachment
Modern Warfare 3 -Kastov-74uKastov-74u Modern Warfare 3 -Kastov 545Kastov 545 Modern Warfare 3 -M4M4
Modern Warfare 3 -TAQ-56TAQ-56 Modern Warfare 3 -STB 556STB 556 Modern Warfare 3 -ISO HemlockISO Hemlock
Modern Warfare 3 -M13BM13B Modern Warfare 3 -Tempus RazorbackTempus Razorback Modern Warfare 3 -M13CM13C
Modern Warfare 3 -FR AvancerFR Avancer Modern Warfare 3 -Lachmann-556Lachmann-556 Modern Warfare 3 -HCR 56HCR 56
Modern Warfare 3 -556 Icarus556 Icarus Modern Warfare 3 -556 Icarus556 Icarus Modern Warfare 3 -MCWMCW
Modern Warfare 3 -MTZ-556MTZ-556 Modern Warfare 3 -SVA 545SVA 545 Modern Warfare 3 -LongbowLongbow
Modern Warfare 3 -Holger 26Holger 26 Modern Warfare 3 -FR 5.56FR 5.56 Modern Warfare 3 -Bruen Mk9Bruen Mk9
Modern Warfare 3 -Holger 556Holger 556 Modern Warfare 3 -DG-56DG-56 Modern Warfare 3 -DG-58 LSWDG-58 LSW
Modern Warfare 3 -DM56DM56 Modern Warfare 3 -RAM-7RAM-7 BAL-27
Modern Warfare 3 -STG44STG44

Modern Warfare 3 (MW3) Related Guides

Modern Warfare 3 - Attachments

List of All Attachments

Attachment Types in MW3

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 Muzzles to Equip in MW3

Best MW3 Muzzles
This list is under construction!

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