This Officially Licensed Colt M4 AEG has a lightweight yet durable polymer construction that keeps both the cost and weight down. While the exterior may be polymer, the internals such as the gearbox are metal making for long lasting performace. This two-tone AEG has tan accessory parts such as the RIS system used for mounting aftermarket accessories such as lights, lasers, grips, and more. The adjustable tan crane stock comfortably houses the included 8.4v 1100 mAh NiMH battery. A standard 250 mAh wall charger is included although Airsoft Station highly recommends a smart charger for the included and extra batteries. The rear sight can be removed and replaced with an aftermarket optic such as a red dot or scope. The compact, lightweight design of the CQB RIS platform is perfect for close-quarters combat and run-and-gun style field play.