Where to Use the Counting Room Vault Key in Call of Duty: Modern Warfare 4 DMZ

In Call of Duty: Modern Warfare 4 DMZ, the Counting Room Vault key grants access to a main-floor door inside the Heavenly Luck Casino in Cheongun Village. The door sits in the casino’s back-of-house offices and leads to storage rooms and a vault room lined with safe-deposit boxes, caches and a safe. A weapons locker inside can hold a 3D printer recipe.

Quick answer: On the map, head to square F4 and enter the Heavenly Luck Casino. Make your way across the gaming floor to the staff offices, then unlock the dark wooden door beside the keypad and fingerprint reader with your key.

Counting Room Vault key details

In your inventory, the key shows up as COUNTING ROOM VAULT. Its item card lists the following:

Rarity: EPIC
Type: KEY
Value: 100
Description: “F4 – Unlocks the counting room’s vault on the main floor of the Heavenly Luck Casino within Cheongun Village.”

The description’s opening “F4” marks the map grid square, as on other DMZ keys. The casino story mission Operation Silent Ledger includes a Counting Room key among its rewards, making it one possible source.

Counting Room Vault key card — The inventory highlights a key card labeled Counting Room Vault. Shown at 00:10 in Mr ZEUS OK’s video. Image: Infinity Ward

Stash the key in a secure slot before deploying; that way, losing your backpack won’t cost you the key.

Where the Counting Room Vault key can drop

Besides the Operation Silent Ledger reward, the Counting Room Vault key can be found as ordinary loot in the field. One place it can drop is an INDUSTRIAL LOCKER inside the Rice Mill in Imjin Farmland.

Head to the Rice Mill. The HUD reads “Rice Mill” beside the compass bearing. On the tac map it sits in the south-west of the playable area, in column D on the line between rows 7 and 8, with a stronghold icon on its main building.

In the mill’s main building, find the bare concrete room with a large multi-pane window. The tall grey industrial locker stands beside that window. Searching it gives “75 XP LOOTED”.

Check the locker grid. The key sits in its own slot; the same locker also held Fasteners (COMMON, RESOURCE, x5). The card reads exactly as described above.

The card offers SECURE, BACKPACK and PING. Choose SECURE so the key goes into a secure slot.

The Rice Mill and the Heavenly Luck Casino (F4) are far apart, so plan an exfil route that passes Cheongun Village, or extract with the key and bring it back on a later deployment. This locker is one place the key can drop, not a fixed spawn.

How to reach the Heavenly Luck Casino counting room door

The door is on the casino’s main floor, in the office area behind the gaming floor. It is not in the basement parking.

Travel to Cheongun Village, then go inside the Heavenly Luck Casino. Once there, the HUD identifies the site as “Heavenly Luck Casino” and assigns it a HIGH threat level. Armed enemies occupy the casino floor. Cheongun Village also has the Mechanic’s Shack, south of the clinic, if you carry that key too.

The Heavenly Luck Casino main floor. Cross it toward the staff side of the building. Shown at 00:28 in Mr ZEUS OK’s video. Image: Infinity Ward

Make your way across the main floor to the building’s staff area. There, find a corridor lined with back rooms and desk-filled offices.

Find the dark wooden door with a keypad and fingerprint reader on the wall next to it, marked by a green light. Interact with it when the prompt “HEAVENLY LUCK CASINO COUNTING ROOM – UNLOCK” appears.

Counting room door prompt — The counting room door in the staff offices, with the unlock prompt showing. Shown at 00:40 in Mr ZEUS OK’s video. Image: Infinity Ward

When the key works, you get 300 XP with the message “DOOR UNLOCKED”, and the prompt changes to “OPEN DOOR”.

Counting room loot: storage rooms and vault

Beyond the door, pass through a dark storage room into a second one containing shelves and green lockers. A heavy grey metal vault door at the back of that room leads to the vault room. The table is one example of what the containers held:

Room	Container	Contents
Dark storage room	Military bag	Ballistic Flight Logs, Smelling Salts x1, Armor Plate x1
Dark storage room	Footlocker	Smelling Salts
Shelved storage room	Weapons locker	ZIP GUN RECIPE, HAN 86, Stim x1, Encrypted Archive
Shelved storage room	Floor	Disposable Parachute
Vault room	Caches	Nuclear Program Files, Encrypted Archive, Infantry Invasion Plans
Vault room	Safe	Gold Skull x1, cash (50)
Vault room	Another cache	M4 (UNCOMMON), cash
Vault room	Shelves	Ballistic Flight Logs

Vault room caches — A cache in the vault room, surrounded by safe-deposit boxes. Caches here can hold intel valuables. Shown at 01:15 in Mr ZEUS OK’s video. Image: Infinity Ward

Keep watch on the doorway as you loot; enemies may come in after you.

Safe with Gold Skull — The vault room safe, holding a Gold Skull. Shown at 01:39 in Mr ZEUS OK’s video. Image: Infinity Ward

Zip Gun Recipe and valuables from the counting room

For crafters, the standout item is the recipe a weapons locker can hold. The ZIP GUN RECIPE is a 3D PRINTER RECIPE worth 5000, with the description “Exfil recipe to print this item at the 3D Printer.” Extract with it, and it becomes a recipe you can use at the 3D printer in your FOB.

Everything else marked VALUABLE is sold for cash at the FOB once you extract.

Valuable	Rarity	Value
Ballistic Flight Logs	UNCOMMON	1000
Nuclear Program Files	RARE	2000
Encrypted Archive	RARE	2000
Infantry Invasion Plans	—	—
Gold Skull	—	—

The Ballistic Flight Logs card spells out the process: “Can be extracted and sold in the FOB for cash.” The same applies to the intel files and the Gold Skull, so get out alive with them to cash in.