Hammer equipped with a de-cocking capability Semi-automatic mode fires as fast as you pull the trigger Fast, accurate, and user friendly in all kinds of terrain H& K branded trademarks are etched onto the slide CO2 blowback system simulates realistic recoil Ambidextrous magazine release accommodates user preference Adjustable hop-up alters BB spin to accommodates range and windage Full metal serrated slide assists in racking your pistol Ergonomically designed to reduce player fatigue Front and rear white dot sights assist in more accurate shots 12g CO2 canister firmly secures into magazine using an allen key Ergonomically textured stippled pistol grip ensures comfortable handling Accessory under-rail can be fitted with flashlights, lasers, and tactical accessorieSpecifications: Brand Umarex Operation CO2 Blowback Build Metal Slide / Polymer Frame Firing Modes Semi Auto with w/ Functional Safety Muzzle Velocity 330 - 350 FPS (w/ 0.20g BBs) Magazine 18 Rounds Propellant 12g CO2 Cartridges Weight 2.18 lbs Barrel Length 4.7 Inches Sight Radius 6.36 Inches Overall Length 5.5 X 8.5 Inches Color BLACK 1X Pistol