MW4 DMZ: Gun Store Weapons Locker Location and How to Get the Key

TL;DR

The Gun Store Weapons Locker Key is a Rare key that opens locked green weapon cabinets inside gun stores in DMZ.
There are two gun store locations — western Cheongun Village and northern Songdo Wharf — both in low-threat zones.
You get the key for free from the Explosives Equipment Kit at DMZ Level 16 or the Trap Equipment Kit at DMZ Level 42.
One key opens one locker — the key disappears after use, so pick your locker carefully.
Loot can include rare weapons, a Cipher Code Ledger (5,000 value), and crafting materials.
Each opened locker awards 375 XP.

The Gun Store Weapons Locker is one of the more consistent loot spots in MW4 DMZ. It’s not behind a high-threat compound, it’s easy to navigate, and the key has guaranteed free sources. If you know where to go and what to bring, this is a clean, low-risk way to pick up some high-tier gear every deployment.

Here’s everything — how to get the key, both gun store locations, how to open the locker, and what to expect inside.

Table of Contents

What Is the Gun Store Weapons Locker Key in MW4 DMZ?

The Gun Store Weapons Locker Key is a Rare key in MW4 DMZ. Its item card description reads: “Unlocks the Weapons Lockers in Gun Stores, found in Western Cheongun Village and Northern Songdo Wharf.”

Key details at a glance:

Name: Gun Store Weapons Locker
Rarity: Rare
Type: Key
Value: 100
Secure Slot compatible: Yes — you keep it even if you lose your backpack

Unlike door keys that open a specific locked room, this key works on the green weapon lockers inside either of the two gun stores on the map. It doesn’t open a door — it opens individual cabinets. And one key opens one locker, so don’t expect to hit all three in the same run with a single key.

How to Get the Gun Store Weapons Locker Key in MW4 DMZ

There are two guaranteed free sources for this key, both tied to DMZ level progression. You don’t need to grind random loot containers to get it — just hit the right level milestones.

Explosives Equipment Kit – DMZ Level 16

Reach DMZ Level 16 and you’ll earn the Explosives Equipment Kit. Open it at the Survival Kits station in your FOB. Inside you’ll find weapons, grenades, and the Gun Store Weapons Locker Key. Move the key from your Stash into your loadout before you deploy — it won’t do you any good sitting in storage.

Trap Equipment Kit – DMZ Level 42

A second key becomes available at DMZ Level 42 through the Trap Equipment Kit. Same process — open it at your Survival Kits FOB station and equip the key before heading into Hajin.

Random Loot (No Guaranteed Drop)

You can also find the key inside loot containers scattered around Hajin, but this is entirely luck-dependent. There’s no specific container that guarantees a drop. If you need the key reliably, the level progression rewards are the way to go.

Important: The key is single-use. Once you open a locker, it’s gone. Always carry it in your secure slot so you keep it on death — losing a Rare key to a hot push is painful when you had to earn it.

If you want to hit DMZ Level 16 faster, check out our MW4 DMZ XP and all level unlocks guide to see what’s worth prioritizing.

Gun Store Weapons Locker Location in MW4 DMZ

There are two gun store locations in Hajin where this key works. Both sit in low-threat zones, which makes them safer to run than most key locations on the map. You only need to visit one per key.

MW4 DMZ Gun Store Weapons Locker Location 1

Location 1: Western Cheongun Village

This is the easier of the two locations to navigate to, especially if you already know Cheongun Village from the casino or police station.

Here’s how to find it:

Open your Tac-Map and find the Police Station in Cheongun Village.
The gun store is directly west of the Police Station — just across the road, in the opposite direction from the Casino.
You can spot it from outside by its store logo featuring an anime character holding a gun.
Enter the building and head to the back room or basement.
The green weapon lockers are in the second room — look for the room with green lighting inside.
Three lockers are available along the left-hand wall. Your key opens one.

The Police Station and Heavenly Luck Casino are both marked on your Tac-Map, so triangulating the gun store between them is quick once you’re in the area. For more on the village layout, see our MW4 DMZ Counting Room Vault key location guide, since the Casino vault is right next door.

MW4 DMZ Gun Store Weapons Locker Location 2

Location 2: Northern Songdo Wharf

The second gun store is in the northern part of Songdo Wharf. This area is also rated low threat, so it’s a clean run if you prefer this side of the map.

Look for a low commercial building beside a fuel station with a yellow canopy on top.
Enter through the glass doors at the front — the lobby has an “INFORMATION” sign inside.
Descend the stairs and head into the green-walled back room where the weapon lockers are.
Same setup as Cheongun Village — a row of tall green lockers waiting for your key.

If you’re already running operations in the Songdo Wharf area and have the key on you, this is the more efficient choice. No need to travel across the map just to hit the Cheongun Village gun store if you’re already nearby.

MW4 DMZ Gun Store Weapons Locker Location 3

How to Open the Gun Store Weapons Locker

Once you’re inside either gun store with the key in your loadout, here’s the step-by-step:

Step 1: Enter the gun store and head to the back room with the green lockers. Yellow-and-black hazard stripes on the floor mark the area in front of the locker row.
Step 2: Choose which locker you want before doing anything else. One key opens one locker — once it’s gone, the other lockers stay locked. There’s no way to preview which locker has better loot, so this is a judgment call.
Step 3: Aim at your chosen locker. With the key in your inventory, the prompt changes from “GUN STORE WEAPONS LOCKER – LOCKED” to “GUN STORE WEAPONS LOCKER – UNLOCK”.
Step 4: Interact to open it. You’ll receive 375 XP and a “DOOR UNLOCKED” confirmation message. The locker contents are now yours to loot.

The key disappears from your inventory immediately after opening. The remaining lockers in the same store still display as locked — opening one does not affect the others.

What Loot Is Inside the Gun Store Weapons Locker?

The loot table isn’t fixed, but confirmed drops from opened lockers include some solid rewards. Here’s what has been found inside:

KG-7 Vulcan (Rare Sniper Rifle — value: 4,300)
Cipher Code Ledger (Epic Valuable — value: 5,000, sold at FOB after extraction)
Control Unit (Crafting Item)
Zip Gun (Craftable Item)
Additional weapons and smaller items

The Cipher Code Ledger is the highlight. Its card reads “Can be extracted and sold in the FOB for cash.” That means you need to actually exfil with it and sell it at your FOB — it pays nothing until you do. The KG-7 Vulcan at Rare rarity is also worth bringing back if your loadout has room.

Since loot is randomized, your run may not hit every item on that list. What’s consistent is that the lockers tend to generate at least one high-value item alongside crafting materials. It’s a good bang-for-effort ratio given the low threat level of both locations.

Tips for Running the Gun Store Weapons Locker

Always Use Your Secure Slot

The Gun Store Weapons Locker Key can sit in your secure slot, which means you keep it on death even if you lose your backpack. Always move it there before deploying. Losing a Rare key to a contested fight near the Casino or Wharf is a frustrating waste of a guaranteed reward.

Cheongun Village Has Higher Traffic

The Casino and Police Station draw a lot of player attention in Cheongun Village. If you’re heading to the gun store there, plan your approach around avoiding the Casino area. Come in from the west side directly rather than cutting through the high-traffic casino zone. Our MW4 DMZ police station locations guide has more detail on navigating the Cheongun Village layout.

Go to Songdo Wharf for a Cleaner Run

If you want a low-stress experience, Songdo Wharf is generally the quieter of the two locations. Fewer players tend to route through there, and the fuel station landmark makes the building easy to identify quickly. Good choice if you’re running solo or want to minimize encounters.

Pair It With Nearby Objectives

Both gun store locations sit near other points of interest. Cheongun Village has the Casino vault, mechanic’s shack, and police station all nearby. Songdo Wharf has its own loot opportunities along the wharf buildings. Stack multiple objectives into a single deployment to make the most of your key trip. Check out our guide to all FOB stations in MW4 DMZ to see what upgrades help maximize your looting runs.

Bring a Weapon Good for Close Quarters

The gun store interiors are tight. The Cheongun Village store in particular has a staircase and basement layout that can catch you off guard if an AI or enemy player is already inside. Coming in with a fast SMG makes clearing any resistance much easier. The VEL 46 is the top SMG in MW4 right now and handles these kinds of tight interior fights well.

Is the Gun Store Weapons Locker Key Worth It?

Yes — especially for free. Both guaranteed sources require no grinding beyond normal DMZ level progression. The locations are low-threat. The potential loot includes a 5,000-value Epic item and a Rare weapon. And the 375 XP per locker adds up when you’re trying to push toward DMZ Level 42 for the second key.

It’s not the highest-stakes loot room in DMZ — things like the Counting Room Vault or the Reactor DRC Locker carry bigger rewards in higher-risk areas. But as a consistent, low-pressure source of solid loot, the Gun Store Weapons Locker is absolutely worth hitting whenever you have the key available.

More MW4 DMZ Guides

Looking for more key locations and DMZ content? Here are the related guides on GamingProMax: