KWA M4 Carbine With Full Metal Tactical Railsystem - Airsoft Gun Overall Length = 34.25" (31" when stock is fully retracted) Outter Barrel Length = 15" (381mm) Power = 8.4V, 9.6V NiMh Battery, or 7.4V, 11.1V Lithium Polymer Battery(Maximum 11.1 V, 18A continuous) Rate of Fire = 20+ rps** Weight = 6.9 lbs. Hop-Up: Adjustable Magazine Capacity = 350 Rounds Caliber = 6mm BB Velocity = 380 ~ 400 fps* with .20 gram BB's This product is restricted from shipment into the state of New York