WTS Collection of PTW repair and spare parts. List below provides a generalization of components, and known/unknown make and models. A knowledgeable Tech could almost assemble a full functioning PTW after motor repairs and assembly. PTW Lower for repair; Unknown lower, assume CTW Systema Gearbox Systema MOSFET and ECU Systema (?) Motor, NON-FUNCTIONAL. Motor spins until it lands on a bad spot. Common issue. Once you turn the armature it works again. This motor needs rewound, or replaced. All parts to complete lower including grip, buffer plate, and pins are included. Systema 2012 Upper Receiver Systema 2012 CQBR barrel Unknown CQB Barrel and hop (D&T? Thin barrel) Unknown aluminium 14.5" M4 barrel 2x OEM Systema 14.5" M4 barrels (great barrels!) Complete Systema hop up unit Complete D&T hop up unit Gold cylinder for parts Systema ECU (unknown) ETiny MOSFET (unknown) CTW gearbox, complete, with broken ear Unknown safety control board Unknown motor w/pinion, missing components