Durable CNC aluminium gearbox ver.3. Made of aluminium 7075. Beautiful looks, high precision, high intensity. Suitable for those who like high precision and light AEG players. This type is the NO.1 choice of upgrade players. Include 6pcs of 8mm ball bearings, rotate spring guide with the bearing and screw set.
Gearbox has unique design. You can remove spring with the spring guide very easy from the back end. Without gearbox disassembly. So you can easy change spring.