Original U.S. M1903 Springfield Rifle Combination Tool. There were six variants of this tool. This listing is for the 6th variant with a one piece rivet, black parkerizing finish and a U.S. stamp without serifs. This particular tool was made under a government contract by NSR of St. Louis, MO. Front Side reads: U.S. B147065 and the rear side reads NSR B147065. See Gun Tools: Their History and Identification for more information.