Colt's improved percussion Army revolver that replaced the 1851 Navy as the primary Union cavalry sidearm. The 1860 Army's round barrel and creeping loading lever represented a refinement over the 1851's octagonal barrel and rammer design. Type: Revolver Action: Single-Action Caliber: .44 Cal Capacity: 6 Year introduced: 1860, USA Weight: 2.75 oz Overall length: 13.75" Status: Discontinued Military use: Yes Intended use: Military, Collecting