The last smoothbore musket adopted by the US military and the first US martial arm manufactured with fully interchangeable parts. Used in the Mexican-American War and early Civil War before being eclipsed by rifled arms. Type: Musket Action: Percussion Caliber: .69 cal Capacity: 1 Year introduced: 1842, USA Weight: 128 oz Overall length: 54" Status: Discontinued Military use: Yes Intended use: military