ECHO 1 Special Operations Branch (SOB) 2 Airsoft Gun.  This is the little brother to the SOB 1l and will make a fine CQB weapon. It come complete with a flattop rail system and a foldable and retractable stock. The SOB 2 also features a full metal receiver and a 30 day warranty through Echo 1 USA, so you know you can depend on it.