The SIS (Special Investigation Section) was built to the exact specifications of the LAPD Special Investigation Section — one of the most elite and secretive law enforcement units in the US. Full-size Government frame, Picatinny rail, KimPro II flat black finish, front strap checkering, and SIS-specific thumb safety. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 8 Year introduced: 2007, USA Weight: 39 oz Overall length: 8.7" Status: Discontinued Intended use: duty, law_enforcement, tactical