The HK USP was originally developed for the .40 S&W cartridge; the 9mm version was a subsequent variant. The USP .40 S&W features the same nine-configuration modular trigger and recoil buffer as the 9mm. Adopted by numerous LE agencies globally. The .40 S&W USP was the basis for the US SOCOM offensive handgun program that produced the MK23 Mod 0. Type: Pistol Action: DA/SA Caliber: .40 S&W Capacity: 13 Year introduced: 1993, Germany Weight: 28.15 oz Overall length: 7.64" Status: Active Intended use: duty, law_enforcement, self_defense, sport