5.56 Go No Go Gages

Forster Headspace Gage 5.56 NATO - 1.4736" plus zero minus .0003" (maximum chamber)

…Gages are made with painstaking care and exacting manufacturing standards to ensure accurate testing of your rifle's chamber. If a rifle closes on a GO gage, the rifle chamber will accept any ammunition that is made within S.A.A.M.I. (industry standard) specifications. If a rifle closes on a NO GO…