SHS Magazine Release Button for WA system GBB/M4

SHS Magazine Release Button for WA system GBB/M4 SHS Magazine Release Button for WA system GBB/M4 - This is a replacement part for a screw-type magazine release catch that is normally found in western arms (WA System) GBB M4's - This part is constructed from high-quality steel. Features: Fits WA (Western Arms) System Steel construction Threaded fitting Easy to install