Colt 1851 Navy Revolver
The Colt Revolving Belt Pistol or Navy Pistol, sometimes erroneously referred to as Colt Revolving Belt Pistol of Naval Caliber or of Navy Caliber (Naval is heavy gun and Navy Size Caliber was termed later for another Colt model), is a cap and ball revolver that was designed by Samuel Colt between 1847 and 1850. Colt first referred to this Revolver as the Ranger Size model, and then Revolving Belt, but the designation Navy quickly took over.