"SERIAL NUMBER 5566034. The receiver retains clear Harrington & Richardson Arms Co. markings, including the ""U.S. Rifle Cal. .30 M1"" designation and serial number 5566034, while the Springfield Armory bolt remains marked ""D28287-12SA"" and ""S-06."" Metal surfaces exhibit finish thinning, handling marks, and service wear consistent with military use, while the walnut stock and handguards display scattered impressions and finish wear from storage and handling. Overall, this rifle presents as a military-configured arsenal-maintained M1 Garand retaining visible manufacturer and inspection markings throughout. Manufactured by Harrington & Richardson Arms Co. circa 1954-1955, this M1 Garand represents the final years of U.S. military production of America's standard service rifle. The rifle features a Springfield Armory bolt marked ""D28287-12SA"" with heat lot code ""S-06,"" a Springfield Armory barrel, and a post-war battle-range rear sight assembly, reflecting the common military practice of replacing and updating components during arsenal overhaul and refurbishment programs. The operating rod appears to be of the later post-war pattern, and together these features are indicative of a military-maintained service rifle that likely saw continued use with U.S. military, reserve, or allied forces during the Cold War era before eventual release through government surplus channels. Serial Number: 5566034"