kjw model-603m9ptp gas/co2 blowback full metal with extra magazine(Airsoft Gun) 1:1 Scale, Heavy Weight, 2.84 lbs / 13 x 7 x 3 ( in ) Full Metal, Semi Auto, Open Ejection Port Locking Slide, Functional Safety, Adjustable Hop-up CO2 compatible, Two 26 Round Gas Magazines Included (comes with green gas magazine inside - CO2 magazines available separately)