Looking for a high velocity airsoft rifle with more features? The Valken ASL+ Hi-velocity Whiskey airsoft gun adds several new features to our normal AEG ASL airsoft electric gun. We 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+ Whiskey AEG 6mm rifle also comes with a rotary style hop-up unit with locking increment settings. The Whiskey electric gun also comes with new external features, including a newly styled 13-inch MLOK rail, and newly designed moulded flash hider. All ASL+ series rifles are also covered by the Valken 1-year bulletproof warranty. 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.