MARKSMAN High Output Valve for VFC SMG / Pistol GBB Airsoft Magazine

Compatibility with following VFC GBB series: GLOCK GBB Series Walther PPQ / PDP GBB Series SIG P320 GBB Series SIG P226 / MK25 GBB Series HK VP9 GBB Series FN FNX45 GBB Series FN FNS9 GBB Series S&W M&P GBB Series HK MP5 GBB Series HK MP7 GBB Series HK UMP GBB Series HK G3A3 / PSG-1 GBB Series HK53 GBB Series Specifications: Made in Taiwan Material : Copper, Alloy, Rubber