Call of Duty MW4 DMZ
Call of Duty MW4 DMZ The Chemist's Secure Armory key, Legendary rarity, I4 bunker description and inventory actions in MW4 DMZ

Keys

Keys and map-grid locations

Keys open special loot rooms. Their descriptions supply map-grid clues that help locate the destination.

Reported key and room

Read the key’s grid clue

Map letters run west to east and numbers north to south. The guide uses D7 at Imjin Farmland to explain coordinates; it is not the destination of an identified key. Read each key’s own description before planning the route.

A named example: The Chemist’s Secure Armory

The selected Legendary key describes an I4 bunker near the Haneul Nuclear Reactor boat house. Its visible controls are Secure, Drop and Ping. The tooltip gives a destination clue; the image does not show acquiring the key or opening the bunker.

Locked from inside is a different clue

The guide says a door locked from inside can have another way in.

What keys do and how to locate destinations

DetailValue
FunctionUnlock special loot rooms
Location hintAll Keys have grid location in description
GridLetters west to east; numbers north to south
ExampleD7 Imjin Farmland describes the grid, not an identified key coordinate
Door distinctionLocked from inside may require another entrance; not every locked door takes a key

Screenshots