Umarex KWA MP7 Airsoft Tactical Gas Blowback Rifle - BlackSPECIFICATIONS OPERATION: GAS BLOWBACK FIRING MODES: FULLY AUTOMATIC BLOWBACK, SEMI AUTOMATIC BLOWBACK MUZZLE VELOCITY: 360 410 FPS (W 0. 20G BBS) MAIN OUTER BODY = FIBER REINFORCED POLYMER INTERNAL STRUCTURE = FULL METAL ACTION HOUSING INNER BARREL = 160MM MAGAZINE CAPACITY = 40 ROUNDS CALIBER = 6MM AIRSOFT BBS GAS SYSTEM = FORCE VELOCITY ENGINE [FV] RATE OF FIRE = 15 ~ 16 RPS** PROPELLANT = GREEN GAS ONLY DIMENSIONS = 15" X 7" [38. 1 CM X 17. 78 CM]