Crafted from ERGAL aluminum and processed using CNC machines, the FPS Softair ERGAL Cylinder Head is compatible with V7 gearbox airsoft guns. It features two enlarged O-rings for excellent sealing with all available cylinders on the market, as well as a built-in UREPAN bumper to absorb shocks and increase wear resistance. This premium cylinder head is designed for airsoft guns with V3 gearboxes, such as the AUG and AK74, and is recommended for use in DMR configurations for increased gearbox protection and reduced noise. It is compatible with popular airsoft brands like ICS, Tokyo Marui, Classic Army, and VFC.