The most widely used rifle of the American Civil War, produced by Springfield Armory and over 20 contract manufacturers. 40-inch barrel firing a .58 caliber Minie ball. Its long-range accuracy rendered Napoleonic tactics obsolete, contributing to the war's extraordinary casualties. Type: Musket Action: Percussion Caliber: .58 cal Capacity: 1 Year introduced: 1861, USA Weight: 128 oz Overall length: 54" Status: Discontinued Military use: Yes Intended use: military