The Cimarron 1860 Richards-Mason is a reproduction of the converted Colt 1860 Army revolver, representing the historical transition from cap-and-ball to cartridge firearms. This six-shot revolver is chambered in .38 Special or .45 Colt, featuring the distinctive Richards-Mason conversion system that modified the original percussion design to accept metallic cartridges. The revolver typically features a 7.5" barrel (other lengths available), with a blued barrel and cylinder, and case-hardened frame. The original-style brass trigger guard and backstrap maintain historical accuracy. Notable features include the conversion-style frame with the characteristic breech plate and firing pin system developed by Richards and Mason, traditional fixed sights with front blade sight, and period-correct one-piece walnut grips. The revolver maintains historical accuracy with its rounded barrel profile, rebated cylinder (characteristic of conversions), and original-style loading gate. Additional features include the traditional four-click hammer action, period-correct timing mechanisms, and authentic cylinder scene roll-engraving. The Richards-Mason conversion represents an important transitional period in firearms development, making this model particularly interesting to collectors and enthusiasts of early cartridge conversion revolvers. The combination of the sleek 1860 Army profile with cartridge-firing capability makes it popular among both collectors and shooters interested in historical firearms.