The 1872 Colt Open Top Revolvers were produced simultanneously with the Richards and Richards-Mason Conversion. Between February 1872 until June 1873 a total of 7 000 pieces were produced. This Colt revolver is not a conversion but was produced for metallic cartridfges: the barrel cylinder and frame were made intentionally whereas parts such as the grip assembly and the internal components were adapted from the Navy `51 and the Army `60. Production stopped abruptly when the Single Action was introduced. Caliber: .38SP – .38Colt – .44Colt – .44SP – .45LC -.45Scho Length of Barrel: 4¾” – 5½” – 7½” Overall Length: bbl. 7½” 13.03″ Weight: bbl. 7½” 2.51 lbs Barrel: Forged steel Frame: Forged steel and color case Cylinder: Engraved Triggerguard: Brass Grip: One piece walnut Cylinder: 6 Barrel Shape: Round Tapered