This is the easiest glitch in cod history for mastery camo lol.
You don't full unlock but you can put it on any gun you want no matter the level.
Requirements: A keyboard and mouse and a controller, also need to own the game....
Note: This works on PC and consoles as long as you have the requirements above.
1. Choose any gun you want to put the camo on and go to where you would apply the camo. (Gunsmith -> customize -> Completionist.
2. Hover your mouse over 'None'.
3. Continuously move your mouse in circles over 'None' do not stop moving your cursor.
4. Put your controller down and use 2 fingers to press left on the d-pad and A or X (whichever you use to select). This will move you to the left and rapidly select atomic at the same time. Even though your mouse cursor is moving it thinks youre selecting an unlocked atomic. I mean at least I think thats how it works im not einstein.
5. If done correctly it will say you have applied atomic camo and you can go and do whatever you want. You don't need to play a game to save it or anything it will be there until you change it. If you do change it just do it again. Not sure if you can save blueprints yet or not but if you can I recommend doing that.
6. ENJOY!!! <3







