The Springfield M1903 was a bolt action rifle in .30-06 that was the primary service rifle for the United States in World War I and continued to serve as a sniper rifle in World War II, Korea, and Vietnam. The rifle was virtually identical to the Mauser rifle, so much to the point that the German government sued the American government, and the latter had to pay the former royalties during World War I (even though they were on opposite sides of the conflict).