The Kahr Arms MK40 is a usa-made striker-fired pistol chambered in .40 S&W, introduced in 1999. Primary use: concealed carry, self-defense. Type: Pistol Action: Striker-Fired Caliber: .40 S&W Capacity: 5 Year introduced: 1999, USA Weight: 18 oz Overall length: 6.5" Status: Active Intended use: concealed carry, self-defense