I just bought a new pistol so I don’t want this gun anymore, which is co2 and green gas. I bought it used from a guy on hop up who took really good care of it and barely used it. I’ve only played one game with it so it is in really good condition still. The black mag is co2 and the sliver mag is green gas. It has a semi and full auto feature. The only thing I don’t like about the gun is the green gas mag. I don’t know if there is a leak or if it has something to do with the hot temp that I was playing in. Other than that I love this gun but I just bought a new one and have no use for this one. Open to any offers but no trades