G&G GR15 Raider Blow Back AEG (Short-Desert Tan) The GR15 Raider by G&G Armament is one the most unique M4 series AEGs that we sell. Manufactured out of Taiwan, these guns are a great alternative and better quality than similar models made in China. This mechbox is built with G&G's new patented pneumatic blow back system. During the firing sequence, the rifle actually produces a an effect similar to that of a real rifle during recoil! With the shorter barrel and adjustable stock, this rifle works best in CQB and medium distance engagements. The buffer tube, barrel assembly, rear sight tower, Rail Interface System, and magazine are all highly durable aluminum alloy and steel. The rest of the exterior parts like the upper and lower receiver are a durable mixture of nylon, fiberglass, and plastic. The mechbox has been factory upgraded with zinc gears, 8mm bearings, high tension spring, and a 25000 rpm Hi-torque long axis motor. The lower receiver features an engraved G&G logo for easy identification and a sling adapter has thoughtfully been added to the buffer tube for easy sling mounting. The standard multi-position telescoping stock has been replaced with a telescoping crane-style stock and the 16 inch barrel replaced with a 11.5 inch one. AS if this gun couldn't get any cooler, the forward assist actually functions as a piston reset button. No more worries about lost spring tension! The rifle comes with the standard G&G high capacity 450 round magazine and there are plenty of other replacements available. The battery compartment is located inside the crane stock of the rifle and can be difficult to install the first couple of times. It is accessed by pinching the two tabs on the underside of the stock plate and pull of the plate itself. Once that is done the battery cells can be installed in the appropriate tubes for an accurate fit. Airsoft players rave about the comfortable feel and unparalleled functionality of this rifle. Good for beginners, intermediate and advanced players!!! Note: Does not include battery or charger