This is a fully licensed Colt M4A1 electric airsoft rifle. This high quality gun features official Colt trademarks and high quality construction. The body is made of a high quality ABS plastic which is very durable yet lightweight. The gun has a full metal version 2 gearbox with steel gears. This M4A1 AEG comes with TWO high capacity 300 round magazines! The required 8.4v NiMH rechargeable battery and battery charger are also included (a 9.6v battery can also be used). The stock is retractable and can easily be adjusted to the shooter's preference. The top carry handle can also be removed to reveal a 20mm rail where an optic can be mounted. This gun is OEM by JG.