M1 GARAND GAS CYLINDER GAUGE SET AR Specialties Garand Gas Cylinder Gauge set includes 3 gauges sized to measure the original USGI gas cyclinder specifications (min , max , reject) Gauges are hardened tool steel to RC60 so they will not easily wear or ding up with use N.I.S.T. certified size tolerance of .0002" (more precise than the original GI gauge) Set consists of 3 gauges and complete easy to follow instructions. This gauge set ships only in the USA, No export or APO. Only sold direct from AR Specialties LLC.