Concept art of the SC4000
The SC4000 is a prototype assault rifle created by Charlie Cole. Both the name and appearance suggest it's the new version of the classic SC-20K M.A.W.S. and it replaced the SC3000. It can be equipped with many modifications except the grenade launcher that was previously used to shoot various gadgets. It has three firing modes: fully-automatic, semi-automatic and burst fire. It comes with built-in silencer for maximum stealth.