Find below weapon information for the STB 556 in Modern Warfare 2. This includes MW2 multiplayer camo challenges and MW2 zombies camo challenges. You can find STB 556 Military challenges, STB 556 Special challenges and STB 556 Mastery challenges, for Multiplayer and Zombies. You can also find weapon information and STB 556 weapon stats. Don't forget you can tap the cards to track your camo challenge progress!