The Amoeba CG 10 inch M4 variant airsoft AEG gun. Ares made Amoeba guns are solid, all metal gearbox, advanced AEGs. Inside the gun includes a built in micro-switch for faster trigger response and a built in mosfet that includes features such as three round burst and battery micro managing Outside is made of a polymer plastic with lots of metal components on the exterior as well. 10 inch version has a full quad rail system to mount your favorite accessories, lights, PEQ box, grips, etc. Top front sight folds up or down. Rear sight is removable to accommodate a red dot sight. Battery (not included) goes into the rear crane stock. Uses any M4 AEG magazines (300 rd included).