AMG Gas Magazine High Output Valve For Umarex/ VFC MP7 Airsoft

AMG Gas Magazine High Output Valve For Umarex/ VFC MP7 Airsoft Stainless Steel Construction Airsoft High Output Valve Design For Replace the Original Output Valve Increase in performance and power output when installed Suitable For Umarex/ VFC MP7 Gas Blow Back GBB Airsoft SMG