The Kahr K40 is the .40 S&W all-stainless steel compact variant in the K series, expanding the original K9 platform to the larger caliber. 3.5-inch barrel and 6+1 capacity. The K40 was among the first truly compact all-steel .40 S&W carry pistols produced, offering the caliber in a frame size that competing manufacturers had reserved exclusively for 9mm. Type: Semi-Auto Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 6 Year introduced: 1997, USA Weight: 26 oz Overall length: 6" Status: Active Intended use: concealed_carry, self_defense