Version 2 Complete Silver Edge Gearbox Front WiringDescription Developed and manufactured by APS, this reinforced V2 type gearbox is designed primarily for use in the AR and MP5 family of replicas. The indicated product is made with a polished gearbox shell and equipped with a quick barrel change system, 8mm ball bearings, bearing piston head, and spring guide. Additional features like steel gears, type 1 cylinder, sealed aluminum nozzle, and EBB system are also included. A complete front wire set