Taylor & Co, – Stainless Steel Drop-In cylinder for Ruger Old Army Blackpowder percussion revolver. Converts you currently owned black powder Ruger Old Army to a single action revolver that will fire modern 45 Long Colt cartridge ammo. In new unfired condition. $275.00 (If you have previously purchase a Ruger Old Army from us in the past 2 years, this cylinder is available for $1.00)