AMG Gas Magazine High Output Valve For Umarex / VFC HK416 / M4 Airsoft

AMG Gas Magazine High Output Valve For Umarex / VFC HK416 / M4 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 HK416 / M4 GBB Airsoft Magazine