Call of Duty Modern Warfare 4‘s DMZ has plenty of locked doors spread all across Hajin, and the gun store weapons locker is arguably one of the best to open. After all, it consistently offers you some of the most useful loot in the game.
Here’s how you can obtain the Gun Store Weapons Locker Key in DMZ and where to find the door it opens.
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How to get the Gun Store Weapons Locker Key in Modern Warfare 4 DMZ

This key has two main guaranteed sources:
- Explosive Equipment Kit
- Trap Equipment Kit
To get them through these means, however, you first need to reach certain player levels. You get the Explosive Equipment Kit at level 16, and the Trap Equipment Kit is available at level 42.
These bags will provide you plenty of weapons, grenades, and the much-required key. However, the keys are a one-time use, so always carry them in your insured slot if you’re bringing them to Hajin.
You can also find the Gun Store Weapons Locker Key in any applicable container, but unlike the equipment kits, that one is a completely luck-dependent. After you have your key in hand, it’s time to head to Hajin and use the Gun Store Weapons Locker Key.
Gun Store Weapons Locker location in Modern Warfare 4 DMZ

Once you have the key, head to Cheongun Village. The gun store locker is located inside a building between the Police Station and the Casino. Head inside and look for the stairs that go down. Enter the second room that has green lightning inside.
Inside that room, you’ll find three lockers waiting for you. The exact loot you get is mostly random, but the usual drops tend to be high tier. Make sure to extract safely and don’t take too many risks, especially near the Casino.