This high end AEG from BOLT airsoft is packed with features. Most notably, this AEG features the BRSS (Bolt Recoil Shock System) which gives the a significant of recoil when it is fired. This makes the gun a lot of fun to shoot and also much more realistic. The gun is based on the famous MK18 MOD0 and is very well constructed. The full metal body gives a realistic weight and feel the the AEG. It is extremely well put together, with virtually zero wobble in the body, stock, and handguard. The handguard is equipped with a RIS quad rail allowing the user to add accessories such as lasers, flashlights, and foregrips. It also has a flat top rail which can be used for adding optics. The rear sight is removable. The battery compartment is found in the stock and can house a up to a 9.6v NiMH or 11.1v LiPO nunchuck battery. Battery and charger sold separately.