Inside The Mechbox: ICS m4 m120 upper gearbox Ep.18
In this Airsplat sponsored video, ASTKilo23 goes over the unique features of the ICS split gearbox design. With this setup, someone can change the range, power, and fps of their m4 aeg on the fly, depending on the situation. He also goes over the full upper gearbox upgrade kit, which comes with an m120 spring installed. Installation procedure is outlined. **All Airsoft guns Require Orange Tips**