agm mp033 vietnam m16 electric airsoft gun full metal fps-400(Airsoft Gun) Features: Manufactured by AGM! True 1:1 Scale, Modeled After the M16A4 Carbine! Electric Powered (AEG) Velocity (FPS): 400 with 0.20g BB's High Capacity 300 Round Magazine Can Shoot Semi and Full Auto with the Flick of a Switch! Rock Solid, Full Metal V.3 Gearbox with High Torque Electric Motor Full Metal Body Construction, including Barrel, Receiver, and Aiming Sights Can Fire 1100 Rounds per Minute on Full Auto Mode! Reinforced Metal Internals Full Fixed Stock Adjustable Hop Up System Working Safety Length: 40"