The Smith & Wesson Model 3 is a single-action revolver that was first introduced in 1870. It was designed by Horace Smith and Daniel B. Wesson and became popular for its reliability and innovative design. The revolver features a break-top mechanism, allowing for quick reloading, and was chambered for various cartridges, including the .44 Russian. This model was widely used by military and law enforcement agencies during the late 19th century. Its distinctive appearance and performance made it a favorite among gun enthusiasts and collectors. The Model 3 is often regarded as one of the first successful large-caliber revolvers in history.