KWA KM16 SR12 AEG The KM16 SR12 by KWA is one of the best advanced level AEGs ever produced. Built in Taiwan by totally fearsome ninja-airsoft-engineers using the most advanced internal and external parts ever made, this rifle is perfect for any airsoft enthusiast, from beginner to advanced. With a full rifle length barrel, fixed position full stock, and high velocity output, this rifle is good for close quarters battle indoors play or any distance outdoors play. The upper receiver, lower receiver, barrel assembly, buffer tube, Rail Interface System, and magazine are all high durable aluminum alloy and the rest of the furniture is fiberglass composite. As an added bonus a flip up front and rear sights are included and already installed. The internals have been factory upgraded with a reinforced mechbox, hardened steel gears, high tension spring, high density piston, and Hi-torque/ Hi-speed motor. Because of all the reinforcement, KWA rifles are able to handle up to an 11.1v Li-Po battery, however a MOSFET is still suggested for safer operation. The rifle comes with a KWA 350 round high capacity magazine and there are plenty of replacements available. The battery compartment is located inside the stock of the rifle and is easy to install. Simply open the small door located on the stock of the rifle and slide the batter in. Airsoft players love this rifle for it's incredible "out-of-box" performance and great durability! Note: Does not include battery or charger