High Quality Content by WIKIPEDIA articles! The Colt Revolving Belt Pistol of Naval Caliber (i.e., .36 cal), later known as the Colt 1851 Navy or Navy Revolver, is a cap and ball revolver. It was designed by Samuel Colt between 1847 and 1850. It remained in production until 1873, when revolvers using fixed metallic cartridges came into widespread use. Total production numbers were exceeded only by the Colt Pocket models in concurrent development, and numbered some 250,000 domestic units and about 22,000 produced in the Colt London Armory. (Wilson, 1985)