Delta Armoury Silent Ops M4

Brand new in box - won in a raffle have no need for it. Hop-Up: Yes, rotary adjustable Materials: Full metal Fire modes: Semi a Full-auto Type of gun: Electric (AEG) Length [mm]: 760-840mm Muzzle velocity [FPS]: approx. 350 FPS with 0.20g BB System Quick Release: Yes Barrel materials: metal Gearbox materials: metal Piston: SHS reinforced with 14 metal teeth Colour: tan and black