The Five-seveN USG (United States Government) was developed to meet US law enforcement and government procurement specifications, featuring updated ambidextrous manual safeties and an accessory rail absent from the IOM. The USG was the standard Five-seveN for the US market from 2004 until the MK2 replaced it in 2013. Type: Pistol Action: Semi-Automatic Caliber: 5.7x28mm Capacity: 20 Year introduced: 2004, Belgium Weight: 23.2 oz Overall length: 8.2" Status: Discontinued Military use: Yes Intended use: law_enforcement, military, collector