CLYMER - CLYMER HEADSPACE GAUGES - GO

Absolutely Essential For Accurate, Safe, Chamber WorkThe only way to accurately measure and test the length of the chamber of the rifle. Essential when chambering a new barrel to ensure a tight, accurate, safe chamber. Whenever you buy a used gun, always check the headspace before firing. Gauges are etched with “Go” or “No-Go” and caliber/gauge name for easy identification. Both Forster and Clymer gauges are made to SAAMI specs. AR-15, Issue:09, Page:080 Big Book Catalog, Issue:66, Page:078 Big Book Catalog, Issue:66, Page:478 Law Enforcement / Police Store, Issue:08, Page:054 New Product Supplement, Issue:611, Page:017