The Smith & Wesson Model 4006 is a usa-made semi-automatic pistol chambered in .40 S&W, introduced in 1990. Primary use: self_defense, sport. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 13 Year introduced: 1990, USA Weight: 25 oz Overall length: 7.5" Status: Discontinued Intended use: self_defense, sport