The Model 586 was the blued L-frame .357 Magnum revolver S&W introduced to address the sustained-fire weakness of the K-frame. The L-frame is wider and stronger than the K-frame, designed to handle a steady diet of .357 Magnum without the accelerated wear that made the Model 19 and 66 problematic. The Model 586 in 4-inch configuration served as a primary duty revolver for agencies that transitioned to the L-frame before the semi-auto transition of the late 1980s. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 1981, USA Weight: 46 oz Overall length: 9.5" Status: Discontinued Intended use: law_enforcement, service, collector