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

Measure your rifle chamber and ensure it is to the safest of expectations by ordering the Forster Products Headspace Gage from GrabAGun today. Designed to S.A.A.M.I. specifications this headspace gage provides you with the best view of your chamber while seeing if it closes at the appropriate measurement.