Quick view Yankee Hill Machine Yankee Hill 444524B sRx Q.D. Flash Hider Short Black Phosphate Steel with 11/16"-24 tpi for sRx Adapters $76.50 Yhms line of srx products were designed with aesthetics and ease-of-use as the top priorities, and that is no different for the yhm srx flash hider.This q.D.Flash hider is compatible q.D.Adapter/mounting interface attaches to the industry standard (hub)... Compare Add to Cart