G&G; CM16 SR S Airsoft AEG Rifle (Black)The Combat Machine receiver is designed for ambidextrous operations including the mag release and charging handle to make it more convenient for left handed shooters. The series also include KeyMod Flip-up Rear and Frontn Sights and a MOSFET that has been pre-programmed on 9.6v NiMH, 11.1v and 7.4v Lipo batteries.TypeAEGRecieverPolymerFPS330-340 FPSMagazine300 RoundsBlowbackNoMosfetYesElectronic Trigger UnitYesBattery LocationBackColorBlack