The Vault Armory is an Epic key in MW4 DMZ. It opens the caged armory in the underground parking garage of the Heavenly Luck Casino in Cheongun Village, grid F4. The room is full of weapons and gear, with two weapons lockers, two rifle cases, armor boxes, military bags and a row of server blades. Below is where the door is, how to get down to it and what we found inside.
- The door is in the parking garage under the Heavenly Luck Casino (F4), a caged room with a mesh door.
- Go in through the north entrance, turn right into the west wing and take the double doors at the back down to the garage.
- Ours held an Epic and a Rare ISO Nightshade, a Bombing Run and two loose valuables, and everything we took added about $23,350 to our loadout.
- The key is single use, so loot the whole room before you leave.
Where the Vault Armory Door Is
The Vault Armory is under the Heavenly Luck Casino in Cheongun Village, grid F4. It is a caged room in the underground parking garage, at the foot of the northwest stairs, and you open it through a mesh door. The garage was a High threat area in our run. You can also find the door under the keys layer on our interactive MW4 DMZ map.
Click to enlarge The Vault Armory door in the casino garage. 
How to Get the Vault Armory Key
The Vault Armory key is field loot, so it can drop from ordinary containers anywhere on Hajin. We have found it three times so far, in a duffel at Songdo Wharf, lying loose on the carpet inside the casino itself and in a decontaminated Irradiated Container at the Haneul Nuclear Reactor. Every other key and the door it opens is in our MW4 DMZ keys guide.
The Route Down to the Armory
- Go into the Heavenly Luck Casino through the north entrance and turn right into the west wing.
- Take the double doors at the back of the wing and follow the stairs down to the parking garage.
- The caged armory is at the foot of the northwest stairs. Open the mesh door with the key.
What Is Inside the Vault Armory
The armory is a small caged room with shelves, a workbench and server racks along the walls. There are two weapons lockers, two rifle cases, two armor boxes, two military bags and three server blades, and valuables lie loose in the room.
Containers
- 3× Server Blade
- 2× Armor Box
- 2× Military Bag
- 2× Rifle Case
- 2× Weapons Locker
Loot
-
Cipher Code Ledger Epic $5,000 Loose in the room -
ISO Nightshade Epic $2,300 Weapons Locker -
ISO Nightshade Rare $1,100 Weapons Locker -
Bombing Run Epic $1,000 Weapons Locker -
2-Plate Armor Vest Rare $1,000 Weapons Locker -
Ballistic Flight Logs Uncommon $1,000 Rifle Case -
CPU Rare $500 Server Blade -
Printed Circuit Board ×2 Rare $500 each Server Blade -
PPSh-41 Uncommon $500 Weapons Locker -
Kastov 762 Common $400 Rifle Case -
ISO Nightshade Common $300 Rifle Case -
Control Unit Uncommon $200 Server Blade -
Detonators Uncommon $200 Weapons Locker -
Reactive Metals ×2 Uncommon $200 each Weapons Locker -
Stim Uncommon $100 Military Bag -
Smoke Grenade Common $50 Military Bag -
Encrypted Archive Rare Loose in the room -
Drill Charge Uncommon Weapons Locker -
Portable Radar Uncommon Weapons Locker -
Ammo Pack Common Rifle Case -
Decoy Grenade Common Military Bag -
Frag Grenade Common Military Bag -
Shock Stick Common Military Bag -
Armor Plate ×7 Military Bag, Armor Box -
Electronics ×8 Server Blade -
Metals ×6 Server Blade -
Synthetics ×3 Server Blade
Plus 1 item we could not identify.
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 carried out value is the change in the loadout value the game shows while you loot.
The weapons lockers are the ones that matter. Ours held an Epic and a Rare ISO Nightshade, a PPSh-41, a Bombing Run and a 2-Plate Armor Vest, and the Cipher Code Ledger on the workbench is an Epic valuable you can sell at the FOB. Everything we took from the room added about $23,350 to our loadout. On an earlier visit a rifle case held an RPG-8 with three rockets instead, so the room rolls differently every time.
Click to enlarge The weapons locker with the Epic ISO Nightshade. 
Click to enlarge The Cipher Code Ledger on the workbench. 
Is the Vault Armory Key Worth It?
Yes. Eleven containers is a lot for one locked room, and the two weapons lockers gave us an Epic and a Rare SMG on top of a Bombing Run. The three server blades are a steady source of Electronics and Printed Circuit Boards for the 3D Printer.
Frequently Asked Questions
Where is the Vault Armory door in MW4 DMZ?
In the underground parking garage of the Heavenly Luck Casino in Cheongun Village, grid F4. It is the caged room with a mesh door, at the foot of the northwest stairs down from the casino.
Where do you get the Vault Armory key?
It is field loot, so it can turn up in normal containers. We found one in a duffel at Songdo Wharf, one lying loose on the carpet inside the casino itself, and one in a decontaminated Irradiated Container at the Haneul Nuclear Reactor.
What is inside the Vault Armory?
Two weapons lockers, two rifle cases, two armor boxes, two military bags and three server blades, plus loose valuables in the room. Our best find was an Epic ISO Nightshade worth $2,300.
Can you use the Vault Armory key more than once?
No. Keys in MW4 DMZ are single use and disappear the moment the door unlocks, so loot the whole room in one go.
