The Smith & Wesson Model 586, is a six- or seven-shot double-action revolver chambered for the .357 Magnum cartridge; it will also chamber and fire .38 Special cartridges. The Model 586 has a carbon steel construction and is available in a blued or nickel finish; it is essentially the same firearm as the Model 686, which has stainless steel construction. It is also known as the Distinguished Combat Magnum.

The Smith & Wesson Model 686 is a six- or seven-shot double-action revolver manufactured by Smith & Wesson and chambered for the .357 Magnum cartridge; it will also chamber and fire .38 Special cartridges. Smith & Wesson introduced the Model 686 in 1981. It is the stainless steel version of the Model 586, which featured a blued steel finish. They are available ported and unported with a choice of 6- or 7-round cylinders.