S&T Springfield M1903 A3 Bolt Action Rifle SpringerAbout Real Rifle The M1903 Springfield is formally known as the United States Rifle, Caliber . 30 06, Model 1903. It was officially adopted as the United States Military bolt action rifle on June 19th. 1903, and served in World War 1. It was officially replaced as the standard infantry rifle by the faster firing, semi automatic, 8 round M1 Garand, starting in 1937. However, the M1903 Springfield remained in service as a standard issue infantry rifle