The FPS Softair ERGAL aluminum cylinder head (TC14E) is specifically designed for V7 gearbox airsoft guns. It is expertly crafted using CNC machines and undergoes an anodizing process for a smooth surface finish. Made from ERGAL aluminum, this cylinder head features two enlarged O-rings to ensure excellent sealing with all available cylinders on the market. It also includes a built-in UREPAN bumper, perfect for absorbing shocks from the piston head and providing high wear resistance, elasticity, and impact resistance. Additionally, the yellow-colored bumper with a hardness of 70 degrees is recommended for use in DMR configurations to increase gearbox skeleton protection and reduce noise. This cylinder head is compatible with airsoft guns from ICS, Tokyo Marui, Classic Army, VFC, and other top brands.