Designed for the VFC M4 / AR-15 / 416 Series Gas Airsoft Magazines
The VFC M4 Gas Magazine Output Valve is a first-party replacement part designed for the VFC M4 and AR15 series gas airsoft magazines and it is also compatible with the Umarex (Elite Force) Heckler & Koch HK416 Series Gas Airsoft Rifles and is a drop-in fit.
Compatibility:
VFC M4 / AR 15 Series Gas Airsoft Magazines
Umarex (Elite Force) Heckler & Koch HK416 Gas Airsoft Magazines