Modify M4 AEG Completed Upgrade Gearbox Set /Front Wire
For M4-A1/ RIS/ SR16 Airsoft(Speed Type /S100+, 8mm)
Modify Completed Gearbox is use with Modify TORUS Gearbox, It has 3 holes. The openings are designed for inspection and tuning purposes. With them, you can check and lubricate directly the piston and gears without having to open them up. Not only the gearbox but is also installed with Modify-Tech to enhance AEGs Internal Parts.
Modify Completed Gear Box is installed by the skilled worker. It comes with high quality and technique.