Manson Precision .17 Fb Headspace Gauges

GO and NO-GO gauges are now available for a new and highly efficient varmint cartridge in addition to a NO-GO gauge for a traditionally popular varmint chambering. The headspace check is one of the most important steps in safe-to-fire inspections and the surest way to verify a chamber is within SAAMI specifications. Accurately determines if chamber meets SAAMI headspace requirements. The GO gauge corresponds to minimum chamber dimensions, and the bolt should close on it. The NO-GO gauge corresponds to maximum dimensions and the bolt should not close on it. New gauges accurately determine if a chamber meets this critical headspace requirement. Precision ground and heat treated to be harder th Mfg: Manson Precision SPECS: Machined M7 high speed steel, in the white, hardened.