King Arms Steel Conversion Kit For KWA/ KSC M11A1 Airsoft

King Arms Steel Conversion Kit For KWA/ KSC M11A1 Airsoft Steel Construction Airsoft Conversion Kit ( QBQ black surface finish) Suitable For KWA/ KSC M11A1 Gas Airsoft Sub Machine Gun SMG Upgrades the stock plastic receiver to a more robust and realistic steel receiver