Converted from a Ruger Blackhawk Bisley, this revolver features the top of the line conversion package offered by Linebaugh Custom Sixguns. The revolver features a heavy octagon barrel, brass grip straps, and free wheel loading system (cylinder rotates in either direction). The solid walled cylinder is chambered in Linebaugh's own .500 Linebaugh cartridge, one of the most powerful handgun calibers. This big bore caliber is the preferred carry of the company's owner John Linebaugh. Linebaugh serial number "1143" on bottom barrel flat, back of the cylinder and inside of each grip panel. The grip panels are also marked "PN/JL" on the inside.