U.S. M1 Garand, barreled receiver and bolt .30-06 cal. Serial #2979989, mfg. Springfield Armory. Barrel is dated 2-55 with an excellent bore. Throat measures at 2 and 1 at the business end. Parkerazation is 98% and a uniform grey color. All Springfield. A great foundation for your next build, or a easy way to replace your worn barrel. C&R OK.