The Monolith features a full-length integral accessory rail machined directly into the dustcover of the frame, a design that provides a more robust rail platform than welded or bolt-on alternatives. Available with adjustable or fixed sights. Type: Semi-Auto Pistol Action: Single-Action Caliber: .45 ACP Capacity: 7 Year introduced: 2003, USA Weight: 42 oz Overall length: 8.5" Status: Active Intended use: Duty, Tactical