FPS Range: 370-390 No trades Specifications: Gearbox Type : Softair Metal Gearbox Magazine Capacity : 400 rounds (6mm BBs). Use all M4 Series Compatible AEG Mag. Overall Length : 930 mm Inner Barrel Length : 363mm Motor Type : Long Type Motor Hop Up : Adjustable Fire Mode : Semi / Full Auto / Safety Weight : 3.85 kgs Muzzle Velocity : 370~390 FPS (Measured with 0.20g BBs) Effective Range : 110-150 feet Battery Pack Size : Stick Type.