Weapons MARK

Normal --> MARK II: 100 Kills | Skin Color: Blue | In Game? Yes
MARK II --> MARK III: 300 Kills | Skin Color: Green | In Game? No
MARK III --> MARK IV: 500 Kills | Skin Color: Yellow | In Game? No
MARK IV --> MARK V: 1.000 Kills | Skin Color: Red | In Game? No