MW4 DMZ keys
MW4 DMZ Keys: Locations and Locked Rooms
Look up a DMZ key to see where it is, which door it opens and what players found inside, and tick off the keys you have.
Last updated Game version: DMZ Early Access, day 2
DMZ Early Access. Keys go into the finder once Activision shows them, or once we have checked them in game footage against a second source. We add more every day. Last checked October 21, 2026.
10 of 10 keys · You have 0
Counting Room Vault
Cheongun Village · Grid F4 · Epic
Opens: The vault of the counting room on the main floor of the Heavenly Luck Casino.
How to get it: A reward for the Operation Silent Ledger Story Mission, which sends you into the same casino's vault.
Confirmed by 4 sources, including video 1 at 0:12, video 2 at 0:30, video 3 at 0:03. Checked 2026-10-20 (DMZ Early Access, day 1).
Mirae Electrical Room
Mirae General Hospital · Grid F5
Opens: The electrical room in the northwest corner of the hospital's basement parking garage.
How to get it: A reward for the Operation Critical Extraction Story Mission at the same hospital.
Confirmed by 4 sources: video 1 at 0:02, video 2 at 0:22, video 3 at 0:08, video 4 at 0:40. Checked 2026-10-21 (DMZ Early Access, day 1).
Shop Records Room
Opens: The records room of a shop at Wolves Stadium.
Confirmed by 2 sources, including video 1 at 0:50. Checked 2026-10-20 (DMZ Early Access, day 1).
Gun Store Weapons Locker Key
Location not stated yet
Opens: A gun store's weapons locker. Activision has not said which gun store.
How to get it: Comes in the Explosives Equipment Kit (DMZ level 16) and the Trap Equipment Kit (DMZ level 42).
Source: Activision. Checked 2026-10-20 (launch progression blog, October 19, 2026).
Police Station Key
Location not stated yet
Opens: A police station. Activision has not said which one; Hajin has 5 police stations on the official Tac Map.
How to get it: Comes in the Recon Equipment Kit at DMZ level 19.
Source: Activision. Checked 2026-10-20 (launch progression blog, October 19, 2026).
Black Market Weapons Locker Key
Location not stated yet
Opens: A black market weapons locker. Activision has not said where.
How to get it: Comes in the Recon Equipment Kit at DMZ level 46.
Source: Activision. Checked 2026-10-20 (launch progression blog, October 19, 2026).
Reactor DRC Locker
Haneul Nuclear Reactor · Grid H4
Opens: The DRC Weapons Locker inside Reactor 02's irradiated pool.
How to get it: A reward for the Operation Fallen Ember Story Mission, which takes you into the same reactor.
Confirmed by 3 sources, including video 1 at 7:26, video 2 at 26:25. Checked 2026-10-21 (DMZ Early Access, day 2).
Coin Mining Den
Location not stated yet
Opens: The Coin Mining Den. We have not confirmed where its door is yet.
How to get it: A reward for the Operation Shopping Hacks Story Mission.
Confirmed by 2 sources: video 1 at 3:16, video 2 at 12:36. Checked 2026-10-21 (DMZ Early Access, day 2).
Supreme Leader Access Card
Location not stated yet
Opens: Not shown yet: we have not seen which door it opens.
How to get it: A reward for the Operation Iron Citadel Story Mission.
Confirmed by 2 sources: video 1 at 0:22, video 2 at 16:36. Checked 2026-10-21 (DMZ Early Access, day 2).
Rose's Highrise Armory
Location not stated yet
Opens: The armory in Rose's high-rise.
How to get it: A reward for the Operation Grid Assault Story Mission.
Confirmed by 2 sources: video 1 at 5:58, video 2 at 18:59. Checked 2026-10-21 (DMZ Early Access, day 2).
Player reports, not yet verified
Only one source names these keys so far. Treat them as leads: check the grid square in the key's own description before you go.
- The Citadel South Wing (14th Political Prison): The South Wing of the Citadel, the fortress inside the prison.
- Vault Armory (Cheongun Village, grid F4): A small armory in the underground parking of the Heavenly Luck Casino.
- Traindepot - Storageroom (Cheongun Village, grid E5): A storage room in the basement of the train station near the fire department.
- Haksan School Armory (Deadtown, grid B7): A makeshift armory on the second floor of the school northeast of the Re-Education Center.
- Re-Education Center Annex (Deadtown, grid B7): The annex on the ground floor of the Re-Education Center.
- Imjin Mill Foreman's Office (Imjin Farmland, grid D8): The foreman's office on the first floor of the rice mill.
- Air Base DRC Weapons Locker (Chang-san Air Base, grid B6): The DRC Weapons Locker in the secure armory deep in the air base's bunker.
- Iskra's Control Room (Cheonwang Peak Array, grid F7): The control room on the upper floor of the broadcast building.
- Netshin IT Room (The Grid, grid G6): A high-security server room on the upper floors of the Netshin Tech Complex.
- Police Weapon Depository (Wolves Stadium, grid G7): An auxiliary police armory north of the police station.
- The Chemist's Secure Armory (Haneul Nuclear Reactor, grid I4): A secured bunker near the reactor's boat house.
- Bank Branch Vault Access: The currency storage area of South Korean bank branches.
How keys work in MW4 DMZ
- Keys open special loot rooms in Hajin.
- Every key's description names a square on the Tac-Map grid. The grid runs letters from west to east and numbers from north to south; D7, for example, is Imjin Farmland. Find it on our interactive Hajin map.
- In the game the square comes first in the description: the Counting Room Vault starts with “F4”, the Mirae Electrical Room starts with “F5”.
- A Lieutenant you kill may drop the key to their own loot room.
- 3 keys also come in DMZ level-up kits; each card above says which kit and level. Some Story Missions pay keys as rewards too.
- Keys can go in your Stash between deployments, but anything outside a Secure Slot is lost if your exfil fails.
- A door locked from the inside usually means there is another way in.
New to the mode? Start with the DMZ beginner's guide, and see every Hajin location with its threat levels.
Sources
- Call of Duty Blog: DMZ Deep Dive Part 1, Hajin environments and threats (October 5, 2026)
- DMZ Deep Dive, Part 2: How to Play – Forward Operating Base (FOB) Full Intel Guide (October 9, 2026)
- Call of Duty Blog: Ready for Launch, Modern Warfare 4 Progression and Prestige (October 19, 2026)
Checked against the official posts on October 21, 2026. The keys come from players’ videos and Activision’s posts. Keys marked Source: Activision, and how keys work, are from Activision; we checked every other key in the finder in game footage, linked under it at the moment it shows, and against a second source. Single-source reports are listed apart.
Continue reading
Next stepGot a key? Check the threat levels where its locked room is.Hajin Map Locations: All 13 POIsAll 13 major Hajin points of interest with their threat levels and named areas, filterable by danger and side of the border.Go there Related guides
Getting startedDMZ Beginner's Guide: FOB and First RunsHow a DMZ deployment works from infil to exfil, which FOB stations open at which level, and what happens when you die.
EnemiesDMZ Threat Levels, Enemies and BossesThe five threat levels, every enemy type named so far, the Lieutenants and Commanders on the Boss Board, and which places start at Extreme.
FAQMW4 DMZ FAQ: Free, Solo, PlatformsStraight answers on price, solo play, platforms, early access, map size and what you keep after a failed exfil.
Card pictures: Screenshot: Call of Duty: Modern Warfare 4 © Activision (enhanced)