The Forster 350 Legend No Go Headspace Gauge is an essential precision tool for gunsmiths to safely test rifle chamber dimensions. Made from high-quality steel with exacting manufacturing standards this gauge helps prevent dangerous excessive headspace conditions.Forster 350 Legend No Go Headspace Gauge (SKU: HG350LN)Precision steel construction for accurate chamber testingTests for excessive headspace beyond S.A.A.M.I. specificationsEssential safety tool for rifle chambering and gunsmithingHelps prevent dangerous brass rupture and gas blowbackCritical for gunsmith safety and accuracy this No Go gauge ensures rifle chambers are properly dimensioned. If a rifle closes on this gauge the chamber may have excessive headspace requiring professional attention.