Camo mastery in Call of Duty is earned weapon by weapon rather than account-wide, which makes the full set the largest single time investment in any Modern Warfare title. Our MW4 camo services cover that grind by hand.
Activision has not yet revealed Modern Warfare 4's mastery camo set or its challenge requirements, and we do not list camos we cannot verify. The Gilded Ruin and Serialized camos are the exception: both are earnable today through a Black Ops 7 and Warzone challenge and unlock in MW4 at launch, with the Serialized variant capped at the first 100,000 players to finish.