Looking for an airsoft rifle with more features? The Valken ASL+ Kilo45 electric gun adds several new features to our normal AEG Kilo airsoft electric gun. They have upgraded the internal components to provide less stress on the gearbox, including a 22:1 ration gear set, piston with full metal teeth, and radial cuts in the gearbox shell. The ASL+ Kilo45 AEG 6mm rifle also comes with a rotary style hop-up unit with locking increment settings. The Kilo45 electric gun also comes with new external features, including a newly designed molded flash hider, 280-round hi-cap SMG style magazine, and SMG magazine adapter that fits inside the M4 magazine well. We recommend using any Valken 7.4v Lipo airsoft battery, 7.4v 2500mAh Li-ion airsoft battery, or 9.6v NiMh airsoft battery with a small Tamiya connector.