Militia Arms Depot is a Rare key in MW4 DMZ. Despite the name, the door does not open a small armory but a whole apartment inside apartment block B at Compound Echo, Hajin River Heights, grid G7. To get to it you first need the Gangbyeon Apartment B key for the front door of the block. Below is where the door is, the short route from the front steps and what we looted in its 14 containers.
- The door is inside apartment block B at Compound Echo, Hajin River Heights (G7), one flight up the stairs from the glass front door.
- You need the Gangbyeon Apartment B key first, because that key opens the front door of block B.
- The key is Rare field loot without a fixed spot that we know of.
- Behind the door is a full apartment with 14 containers. Compound Echo was Medium threat in our run.
- The loot is limited, mostly common and uncommon ingredients with a few valuables. Not worth a trip across the map.
Where the Militia Arms Depot Door Is
The Militia Arms Depot is at Compound Echo in Hajin River Heights, grid G7, inside apartment block B. That is the block behind the concrete barriers with the sandbagged glass double door at the top of its front steps. Inside, the corridor leads to a stairwell, and the door is one flight up, on the landing. The prompt reads Militia Arms Depot. Compound Echo was a Medium threat area in our run. You can also find the door under the keys layer on our interactive MW4 DMZ map.
Click to enlarge Apartment block B, the way in. 
Click to enlarge The door on the landing with the prompt, brightened. 
That glass front door is the problem. It only opens with the Gangbyeon Apartment B key, which unlocks block B as a stronghold. So you need both keys. Use the Gangbyeon Apartment B key on the front door first, walk in, and only then can you use the Militia Arms Depot key on the door upstairs.
How to Get the Militia Arms Depot Key
Militia Arms Depot is a Rare key that comes from field loot. We have not found a fixed spot for it, so keep an eye out for it in containers anywhere on Hajin. Every other key and the door it opens is in our MW4 DMZ keys guide.
The Route to the Door
- Go to Compound Echo in Hajin River Heights and find apartment block B behind the concrete barriers.
- Walk up the front steps and open the glass double door with the Gangbyeon Apartment B key, then follow the corridor to the stairs.
- Go one flight up. The Militia Arms Depot door is on the landing.
What Is Inside the Militia Arms Depot
The door opens into a complete apartment with a kitchen, a living room and several bedrooms, and the loot is spread over all of it. We opened 14 containers. There are jackets, a dresser, luggage and a duffel in the bedrooms, a military bag and a refrigerator in the kitchen, and three caches. The game calls a long green rifle crate, a wall cabinet and a bag under a desk all Cache. A MINA MS41 crate by the window shows up as a footlocker, and there is a rifle case, an armor box and a supply crate as well. Some loot also lay loose around the apartment.
Containers
- 3× Cache
- 2× Jacket
- 1× Armor Box
- 1× Dresser
- 1× Duffel
- 1× Footlocker
- 1× Luggage
- 1× Military Bag
- 1× Refrigerator
- 1× Rifle Case
- 1× Supply Crate
The containers decide the loot. Tap one to see what it can drop in our loot data.
Loot
-
Degraded Execution Footage ×2 Rare $2,000 each Cache, Supply Crate -
Nuclear Program Files Rare $2,000 Supply Crate -
Ballistic Flight Logs ×2 Uncommon $1,000 each Loose in the room -
Infantry Invasion Plans ×3 Uncommon $1,000 each Cache, Supply Crate, Rifle Case -
Binding Catalyst Rare $500 Cache -
1-Plate Armor Vest Uncommon $500 Supply Crate -
Warlord Uncommon $500 Cache -
Defibrillator Rare $300 Duffel -
Rigid Synthetics ×3 Uncommon $200 each Cache, Dresser -
Warlord Common $200 Rifle Case -
Bandage Uncommon $100 Footlocker -
Stim ×2 Uncommon $100 each Cache, Dresser -
C4 Common $50 Supply Crate -
Decoy Grenade Common $50 Military Bag -
Flash Common $50 Loose in the room -
Semtex Common $50 Military Bag -
Thermite Common $50 Loose in the room -
Armor Plate ×4 Common Cache, Military Bag, Armor Box - Pistol/SMG Ammo ×9 Cache
-
Chemicals ×19 Cache, Jacket, Refrigerator -
Electronics ×9 Footlocker -
Synthetics ×21 Jacket, Luggage
From one opening in our own run. Loot is random, so your room can roll differently, and we add every new run of this key. Values are per item, from the in-game tooltips. The loot value adds up every item with a known value and the cash, so it is a lower bound: crafting resources and items without a value are not in it.
Missing this key? Other players trade spare keys on our DMZ Trading board, item for item.
Most of it is common and uncommon ingredients and everyday gear, with a few valuables in between. The supply crate held Nuclear Program Files, Degraded Execution Footage and Infantry Invasion Plans next to a 1-Plate Armor Vest, and the rifle crate a second Degraded Execution Footage with an Uncommon Warlord shotgun. Two Ballistic Flight Logs worth $1,000 each lay loose on a table and a desk, and we found Infantry Invasion Plans three times in total. A Binding Catalyst and a Defibrillator came on top. Our loadout value went up by about $11,000 over the whole apartment.
Click to enlarge The living room with the footlocker by the window. 
Click to enlarge The supply crate with the valuables, brightened. 
Is the Militia Arms Depot Key Worth It?
Not really. The loot is limited, and getting in takes a lot of time, because you need the Gangbyeon Apartment B key for the front door before you can even use this one. There are often a lot of players around Compound Echo too, which makes it dangerous. Inside you get a few caches and containers with common and uncommon ingredients, and our run had a couple of valuables on top. Do not travel across the whole map for this key. If you find it in your stash, just sell it. If you find it near the building, use it once if you are curious what is inside, but keep your expectations low.
Frequently Asked Questions
Where is the Militia Arms Depot door in MW4 DMZ?
Inside apartment block B at Compound Echo in Hajin River Heights, grid G7. Go in through the glass double door at the top of the front steps, follow the corridor to the stairs and go one flight up. The door is on the landing, and the prompt reads Militia Arms Depot.
Where do you find the Militia Arms Depot key?
It is a Rare key from field loot. We have not found a fixed spot for it, so it can turn up in containers anywhere. All other keys and the doors they open are in our MW4 DMZ keys guide.
What is inside the Militia Arms Depot?
A whole apartment, not a single armory room. We opened 14 containers in it, from jackets, a dresser and luggage in the bedrooms to caches, a footlocker, an armor box and a supply crate. Our best finds were two Degraded Execution Footage worth $2,000 each, Nuclear Program Files and two Ballistic Flight Logs.
Do you need the Gangbyeon Apartment B key for the Militia Arms Depot?
Yes. The Militia Arms Depot is inside apartment block B, and the glass front door of block B only opens with the Gangbyeon Apartment B key. Use that key first, walk in, and only then can you use the Militia Arms Depot key on the door one flight up.
