Full metal body and gearbox M4S Airsoft Electric Rifle System Shoot up to 400 FPS This Dboys premium full metal M4S system electric Airsoft rifle features full metal receiver, metal gearbox, metal one piece inner & outer barrel assembly, metal tri-rail system, metal rear stock tube, metal high capacity 300 round BB magazine, retractable gun stock. This gun shoots strong and accurate. Shoot at 350-400 FPS with 0.2G BB. It comes with a fore-grip A 8.4v 1100 MAH NI-MH battery and a battery wall charger are included. Please max. charge battery 3.5 hours. Overcharge may damage battery. Color of battery charger light does not change. Buyer need to pay tension for the hours of battery in charge. Don't overcharge battery. Specification: New full size full metal M4S AEG. Fires 6mm plastic BB small pack of 6mm 0.2G Precision BB’s included Auto & Semi-auto Safe Switch, adjustable hop-up. Shoot Up to 850 Round BB/Minute Integrated metal tri-rail system Shoot 350-4000 feet per second with 0.2G BB 300 Round BB winging up high cap. metal magazine 4 position retractable gun stock 8.4V, 1100 MAH rechargeable battery, Battery wall charger. Forward hand grip, Sling, Clearing rod included Fixed Orange Barrel Tip This Airsoft gun contains the colored markings required by law, including a permanently attached orange barrel tip but it fell off.