Christopher Spencer's lever-action repeating carbine that gave Union cavalry a decisive firepower advantage in the Civil War. The Spencer held seven rounds in a tubular magazine in the buttstock, allowing Union troopers to outgun Confederate cavalry consistently. Type: Rifle Action: Lever-Action Caliber: .56-56 Spencer Capacity: 7 Year introduced: 1865, USA Weight: 8.25 oz Overall length: 37.5" Status: Discontinued Military use: Yes Intended use: Military, Collecting