The Professional Model is Springfield's Custom Shop pinnacle, each pistol hand-fitted and tuned. Built to FBI Hostage Rescue Team specification with a match barrel, hand-fitted slide-to-frame fit, and a tested accuracy guarantee. Each pistol is certified by a Springfield Custom Shop armorer. Type: Semi-Auto Pistol Action: Single-Action Caliber: .45 ACP Capacity: 7 Year introduced: 1999, USA Weight: 42 oz Overall length: 8.6" Status: Active Intended use: Duty, Competition, Collecting