Modern Warfare 4 DMZ: Counting Room Vault Key Location and How to Use It in Heavenly Luck Casino

Call of Duty: Modern Warfare 4's DMZ mode introduces a new high-stakes challenge with the Counting Room vault key, a rare item that unlocks a hidden vault inside the Heavenly Luck casino. This guide explains exactly where to find the key and how to use it to claim valuable loot. The Heavenly Luck casino is a landmark on the Al Mazrah map, known for its tight corridors and high-tier loot. The counting room is located on the upper floor, accessible via a staircase near the main lobby. Once you have the key, head to the counting room door, which is locked and requires the key to open. Inside, you'll find cash, high-tier weapons, and possibly a mission item. This vault is a hot spot for player encounters, so approach with caution and consider bringing a squad. Whether you're completing a faction mission or just looking for top-tier gear, knowing where to use the counting room vault key can give you a significant advantage in DMZ.