The Model 686 is a double-action revolver manufactured by Smith & Wesson. It is part of the S&W 600 series and is known for its durability and accuracy. The revolver typically features a stainless steel frame and is chambered for the .357 Magnum cartridge, allowing it to also fire .38 Special rounds. This model is popular among both law enforcement and civilian shooters due to its reliability and ease of use. The Model 686 is available in various barrel lengths, providing options for different shooting preferences and purposes, such as target shooting or personal defense.