A key opens one locked room on Hajin, and its card names the Tac Map grid square of the door: letters run west to east, numbers north to south. Keys come from loot, Lieutenants, Survival Kits and DMZ Orders. Our Keys page lists every key with its room, and the Hajin map shows the doors.
How do you find a key's door?
Every key card names a grid square on the Tac Map, with letters running west to east and numbers north to south. Go to that square and look for the room the key's name describes.
Our Keys page shows each key with its room, and the Hajin map marks every door we know.
Where do keys come from?
Keys turn up as loot, in drawers, duffel bags and containers. A Lieutenant can drop a key to their own locked area, Survival Kits from the DMZ level rewards bring keys such as the Police Station Key and the Gun Store Weapons Locker Key, and the Underground chapter of the DMZ Orders pays the Coin Mining Den Key.
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Survival KitRecon Equipment KitUncommon kit with a Seeker Drone, a Recon Drone, two Heartbeat Sensors and two Snapshot Grenades, plus a key: the Level 19 kit brings a Police Station Key, the Level 46 kit a Black Market Weapons Locker Key. -
Survival KitExplosives Equipment KitUncommon kit with two each of C4, Semtex, Frag Grenades and Proximity Mines, plus a Gun Store Weapons Locker Key. 
KeyCoin Mining Den KeyThe reward for Chapter 2 of the DMZ Orders, Underground, and for Operation Shopping Hacks.
What is inside a key room?
Key rooms are worth the detour. One Uncommon key, Gangbyeon Apartment B, opens a stronghold at Compound Echo where one run found two Epic backpacks, Degraded Execution Footage and a vest recipe, and unlocking it paid 300 XP.
Police stations hold a locked Armory, and the gun store keeps a Weapons Locker.
- KeyGangbyeon Apartment BOpens the Gangbyeon Apartment B stronghold in Compound Echo at Hajin River Heights.
- KeyPolice Station ArmoryOpens the caged armory of a police station; every station has one. Activision lists it as the Police Station Key in the level 19 Recon Equipment Kit.
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KeyGun Store Weapons Locker KeyComes in the Explosives Equipment Kit (DMZ level 16) and the Trap Equipment Kit (level 42).
Can you open a locked door without a key?
Sometimes. A Door Breacher Charge breaches a locked door once, and keypad doors open with a code instead of a key; Dynamic Ops hide such codes in safes and step names.
A door locked from the inside means another way in exists, and some rooms can only be reached by climbing in, like a Deadtown room with a hole in its roof.
Do keys pay?
The Key Cash trait, a Scout Minor Trait, pays cash whenever you open a locked space with a key, more for rarer keys. Most keys also sell for 100 DMZ Cash at the FOB.
Quick questions
- How do you read a key location in MW4 DMZ?
- The key card names a Tac Map grid square: letters run west to east, numbers north to south.
- Where do you get keys in DMZ?
- From loot, Lieutenants, Survival Kits from the DMZ level rewards and DMZ Orders.
- Can you open locked doors without a key?
- With a Door Breacher Charge, a keypad code or another way in, such as a hole in the roof.
- Are keys worth keeping?
- Yes. Key rooms such as armories and weapons lockers hold good loot, and the Key Cash trait pays for every room you open.