Samoon NPAS Nozzle for GHK M4 GBB Airsoft Rifle

Samoon NPAS Nozzle for GHK GBB M4 GBB Airsoft Rifle Polymer Construction Airsoft Nozzle (NPAS) With CNC Aluminum Rocket Valve Suitable For GHK M4 Series Gas Blow Back GBB Rifle Muzzle velocity range 140-60m/s ( 450-200 fps)