Uploaded October 2022 | Updated September 2026, 6 hours ago

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This is probably one of the most if not THE MOST effective ways to level up your weapons in Modern Warfare 2.

You will be able to unlock all of the camo challenges for each weapon using this. Once you have the weapon leveled, you can then unlock the challenges for the camos. What are your thoughts on the mastery camos? I think they are amazing.

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