Colt's first rimfire revolver, introduced as a transition toward self-contained metallic cartridges. The Open Top was essentially a conversion of the percussion frame to handle rimfire cartridges without a recoil shield. Type: Revolver Action: Single-Action Caliber: 22 Short Capacity: 7 Year introduced: 1871, USA Weight: 12 oz Overall length: 6.75" Status: Discontinued Intended use: Self-Defense, Concealed Carry