RA Tech M4 V3 NPAS Complete Bolt Carrier Set for GHK M4 V3 GBB Airsoft Rifle

Key Feature CNC Steel Construction Airsoft Bolt Carrier Set ( Heat Treatment) Come With RA-TECH NPAS Loading Nozzle Able to Adjust The Airsoft Muzzle Velocity Meets field velocity requirements or adapts to temperature/weather changes Suitable For GHK M4 Version 3 Gas Blow Back GBB Airsoft Rifle