The Spyder Sonix is a .68cal semi automatic paintball gun so one trigger pull will get one shot. The latest Spyder Sonix includes an aluminum clamping feedneck to keep your loader secure. The body on the sonix is all aluminum with a high impact polymer grip frame which includes a double trigger. The vertical front grip on the spyder sonix provides increased gun control in the heat of the battle. The barrel on the spyder sonix is a 9" spyder threaded barrel. The sonix is compatible with co2 or compressed air.