Version 3 Complete Silver Edge Gearbox Rear WiringDescription Developed and manufactured by APS, this reinforced V3 type EBB gearbox is designed primarily for use in the AK family of replicas with a similar blowback system. The indicated product is made with a polished gearbox shell and equipped with a quick spring change system, 8mm ball bearings, bearing piston head, and spring guide. A complete front wire set makes this drop in kit easy to install and operate. This gearbox is compatible with