MARKSMAN M4.5 Inlet Valve for MARUI M4 MWS GBB Magazine

Specifications: Made in Taiwan Material : Copper, Alloy, Rubber The included O-ring for the inlet nozzle can be installed at the opening (where it connects to the gas canister): Without installation: Functions same as the original Tokyo Marui M4 MWS gas magazine configuration (with pressure relief). With installation: No pressure relief.