This metal cylinder head is suitable for Ver.II gearbox (M4/ G3/ MP5). It is CNC machined out of Aluminum, equipped with oil and friction resistant o-ring and buffer rubber to provide better air sealing and cushioning from the piston.
This metal cylinder head is suitable for Ver.II gearbox (M4/ G3/ MP5). It is CNC machined out of Aluminum, equipped with oil and friction resistant o-ring and buffer rubber to provide better air sealing and cushioning from the piston.