The HK USP in .40 S&W was the first caliber variant introduced with the USP line, predating the 9mm version as the primary development platform. It was built specifically to win the FBI and US law enforcement market during the .40 S&W adoption wave of the early 1990s. The stronger buffer system handles the .40 S&W snap effectively. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 13 Year introduced: 1993, Germany Weight: 27.6 oz Overall length: 7.87" Status: Active Intended use: Law Enforcement, Civilian Defense