Airsoft Website Standard Torque Motor Complete Gearbox for Umarex Elite Force UMP Series AEG Rifles AirsoftStandard Torque Motor Complete Gearbox for Umarex Elite Force UMP Series AEG Rifles Airsoft Made out of metal. Quick Change Spring System. Reinforced metal gearbox shell, cylinder, piston set and heavy duty steel gears. Metal spring guide and bearings. Comes with standard torque motor. Comes with spring, standard torque Motor, Motor Housing, Cylinder, Cylinder Head, Piston, Piston Head, Bushing, Trigger Assembling, Wiring. Suitable for Umarex, Elite