Complete gearbox Type 2. The same as CYMA put in new M4. Inner parts are little imrpooved. Metal spring guide with the bearing, 7mm metal bushings, spring equal to M120..etc. Gearbox has long back wiring. Set also include motor with the long axle. This is the original part manufacturer CYMA.
is among the oldest, most experienced and the largest Airsoft manufacturing facility in the world. Known for their unmatched quality control and professionalism, CYMA is selected to be the OEM of a vast amount of Airsoft products. Durability and performance meets affordability!