Looking for an airsoft rifle with more features? The Valken ASL+ Romeo electric gun adds several new features to our normal ASL airsoft electric gun. We have upgraded the internal components to provide less stress on the gearbox, including a 22:1 ratio gear set, piston with full metal teeth, and radial cuts in the gearbox shell. The ASL+ Romeo AEG 6mm rifle also comes with a rotary style hop-up unit with locking increment settings. The Romeo electric gun also comes with new external features, including a 3-position PDW style buttstock with two QD sling mount attachment points, and MLOK compatible rail.