Groza can't unlock camo's

I can’t unlock any camo for my Groza. I played a lot with it but i don’t unlock any camo. What do I need to do?

Hello SpookyHobbit,

We are only able to provide assistance with our Classic Games Tech (Diablo II, Starcraft, etc…) via this forum. For any issues with the Activision games (Black Ops, Modern Warfare/Warzone) please refer to Activision Support.