Whether you've earned one of the various MW4 DMZ keys by completing a Story Mission, finding it somewhere on the map, or, dare I say, by killing another player (shame on you), then you might be wondering where to use it.

In MW4's DMZ mode, there are loads of keys that unlock valuable lockers and vaults, but their description only gets you to a general area - not the precise location of the wares. To help you out, here's a full list of every DMZ key and where to use it, so if you're looking something in particular, find it with CTRL+F or your browser's search function.

These are all the keys that can be used in the Political Prison area of the map:

Some of the keys can be used at different locations, including the likes of Blackmarket Weapons Lockers and Silo Control Rooms, both of which you can find in this northwest part of the map. This is a common spawn area, as well, so if you have one of these multi-use keys, this is a good place to use it.

Keys 5 to 11 in this list are a little harder to use as you'll need to breach the actual prison, and you'll of course encounter plenty of hostility as you do so.

These are all the DMZ keys that can be used in the Cheongun Village and Mirae Hospital areas of the map:

The village is a fairly simple area to loot as it's lots of small buildings rather than one well-locked down area like the hospital or the casino.

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