By the spring of 1865 the U.S. Army of the Potomac Cavalry Corps was armed with 3,200 “New Model” Remington .44-cal. revolvers out of a total of about 8,300 revolvers.

Both the Colt 1860 Army (top, represented by a Cimarron .44 Spl.) and Remington 1858 Navy (middle, represented by the Cimarron in .38 Spl.) were built as new cartridge arms originally in .44 Colt ...