This 6mm pump action shot gun holds 19 bbs in its magazine. It has a BAX Hop Up system and is single pump shot weapon. MOSSBERG M590 Tactical Airsoft Shotgun is rugged with robust construction. The matte black gives a non-glare finish and hefty weight give the air softer a great experience. Adjustable hop-up systems give spectacular power and accuracy. Specifications and Features: BAXS accuracy system Tactical Rail Extendable Should stock Officially licensed Specifications Caliber: 6mm Color or finish: Black Weight: Height: Length: Magazine Capacity: 19 bbs Velocity: 325 FPS Accuracy: 25/25 Propulsion: Spring Material: ABS Plastic