UMAREX HK45 CO2 NBB STEEL BB GUN ALLEN It is able to take It is able to take green gas – Full metal construction as in the real firearm counter part– Dual finish ported slide reducing overall slide weight– Aggressive serrations at front and back of slide enhances racking– Rose Gold anodized threaded outer barrel allows suppressor tracer attachments– Under barrel Picatinny rail for accessory attachment– Trigger guard under cuts allowing higher gripping and better control– Dargon scale stippling enhancing grip and dexterity– Enlarged Rose Gold magazine well enabling seamless reloads– Ambidextrous safety levers works with all shooters– High vis green fiber optic front sight matching the real pistol as seen in the movie– Utilizes CO2 magazines (compatible with KJ mags)– This is a dual system pistol which can use CO2 mag (400fps) and also can use Green Gas mags (330fps) Ammo Capacity: 20 Rounds Model: HK45