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Smart gunsmiths and shooters have long selected our headspace gages because each is manufactured from top-quality, hardened steel and precision ground to *American National Standards Institute SAAMI tolerances.
When safety and performance are on the line, choose our headspace gages and receive the peace of mind that comes with knowing and understanding how to check your rifle’s headspace.
Ground to an exacting ±.00015" headspace tolerance to ensure accurate testing of a rifle’s chamber.
Corresponds to the longest safe headspace. If a rifle closes on a FIELD gage, its chamber is dangerously close to, or longer than, SAAMI-specified maximum chamber size. If chamber headspace is excessive, the gun should be taken out of service until it has been inspected and repaired by a competent gunsmith. FIELD gages are slightly shorter than the SAAMI maximum in order to give a small safety margin.