Modern Warfare 2 beta: How to unlock weapons - PC Invasion

The new weapon unlock system in Modern Warfare 2 is confusing fans. Here's how to unlock new weapons in the Modern Warfare 2 beta.
Here's how to get your hands on some new guns.

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Yes you can unlock camos with AI kills in DMZ. No I don't know how it works. (Glitch maybe?) : r/CODWarzone

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Spreadsheet of all the base weapons and their variants and how to unlock them. : r/ModernWarfareII