Call of Duty Modern Warfare 3 (MW3) Walkthrough & Guides Wiki

Call of Duty Modern Warfare 3 (MW3)

How to Unlock Schlager PEQ Box IV Attachment

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

List of Contents

How to Unlock Schlager PEQ Box IV

Level Up Guns in MW3 Multiplayer Modes

The Schlager PEQ Box IV attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:

Weapon Required Level
Modern Warfare 3 -Holger 556Holger 556 Raise the Holger 556 to Level 12

Complete the Attachment's Armory Unlock Challenge

Modern Warfare 3 - Armory Unlock Challenge for Attachments

Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the Schlager PEQ Box IV attachment, early.

Once you unlock this feature, modify your chosen gun at the Gunsmith and select the Schlager PEQ Box IV from the Laser 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

Schlager PEQ Box IV Compatible Guns

Guns That Can Use the Attachment
Modern Warfare 3 -Vaznev-9KVaznev-9K Modern Warfare 3 -FSS HurricaneFSS Hurricane Modern Warfare 3 -MinibakMinibak
Modern Warfare 3 -Kastov-74uKastov-74u Modern Warfare 3 -Kastov 545Kastov 545 Modern Warfare 3 -Kastov 762Kastov 762
Modern Warfare 3 -M4M4 Modern Warfare 3 -M16M16 Modern Warfare 3 -TAQ-56TAQ-56
Modern Warfare 3 -ISO HemlockISO Hemlock Modern Warfare 3 -Tempus RazorbackTempus Razorback Modern Warfare 3 -FR AvancerFR Avancer
Modern Warfare 3 -Lachmann-556Lachmann-556 Modern Warfare 3 -SO-14SO-14 Modern Warfare 3 -TAQ-VTAQ-V
Modern Warfare 3 -FTAC ReconFTAC Recon Modern Warfare 3 -Lachmann-762Lachmann-762 Modern Warfare 3 -Cronen SquallCronen Squall
Modern Warfare 3 -SAKIN MG38SAKIN MG38 Modern Warfare 3 -556 Icarus556 Icarus Modern Warfare 3 -556 Icarus556 Icarus
Modern Warfare 3 -RAAL MGRAAL MG Modern Warfare 3 -RPKRPK Modern Warfare 3 -RAPP HRAPP H
Modern Warfare 3 -EBR-14EBR-14 Modern Warfare 3 -SP-R 208SP-R 208 Modern Warfare 3 -LM-SLM-S
Modern Warfare 3 -TAQ-MTAQ-M Modern Warfare 3 -Tempus TorrentTempus Torrent Modern Warfare 3 -SA-B 50SA-B 50
Modern Warfare 3 -Signal 50Signal 50 Modern Warfare 3 -MCPR-300MCPR-300 Modern Warfare 3 -LA-B 330LA-B 330
Modern Warfare 3 -SP-X 80SP-X 80 Modern Warfare 3 -MCWMCW Modern Warfare 3 -MTZ-762MTZ-762
Modern Warfare 3 -KV InhibitorKV Inhibitor Modern Warfare 3 -LongbowLongbow Modern Warfare 3 -Holger 26Holger 26
Modern Warfare 3 -Pulemyot 762Pulemyot 762 Modern Warfare 3 -RiveterRiveter Modern Warfare 3 -FR 5.56FR 5.56
Modern Warfare 3 -TAQ EradicatorTAQ Eradicator Modern Warfare 3 -Holger 556Holger 556 Modern Warfare 3 -KVD EnforcerKVD Enforcer
Modern Warfare 3 -DG-56DG-56 Modern Warfare 3 -SidewinderSidewinder Modern Warfare 3 -HaymakerHaymaker
Modern Warfare 3 -DG-58 LSWDG-58 LSW Modern Warfare 3 -DM56DM56 Modern Warfare 3 -KATT-AMRKATT-AMR
Modern Warfare 3 -XRK StalkerXRK Stalker Modern Warfare 3 -RAM-7RAM-7 Modern Warfare 3 -TAQ EvolvereTAQ Evolvere
Modern Warfare 3 -RAM-9RAM-9 SOA Subverter Modern Warfare 3 -MORSMORS
BAL-27

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

All Laser Attachments in MW3

All Related Attachments
1MW Artemis Laser 1MW Laser Box 1MW Pistol Laser
1MW Quick Fire Laser 7MW Canted Laser Accu-Shot 5MW Laser
Basilisk Grip Laser Canted Vibro-Dot 7 Corio LAZ-44 V3
Corvus LZR-790 Corvus PEQ Beam-5 CS15 Scarlet Box Laser
CS15 Scarlet Cylindrical Laser CS15 Scarlet Mounted Laser DXS Flash 90
DZM-1000 L EXF Solarflare FJX Diod-70
FJX Ultrabeam XR FSS OLE-V Laser FTac Grimline Laser
FTAC Vortex 200 Hipshot L20 Kimura RYL33 Laser Light
KR HX-15 Laser Light Luminate-44 Point-G3P 04
Pro Sapphire Box Laser Pro Sapphire Cylindrical Laser Pro Sapphire Mounted Laser
Revo-LSD 7MW Schlager PEQ Box IV Schlager Ulo-66 Laser
Series 710 Pistol Laser SL Razorhawk Laser Light STOVL DR Laser Box
STOVL Tac Laser SZ 1MW PEQ Verdant Hook Box Laser
Verdant Hook Cylindrical Laser Verdant Hook Mounted Laser VLK LZR 7MW
Xten Sidearm-L400

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