The Rail Gun added a Picatinny rail to the dustcover of the Government Model frame, enabling the mounting of tactical lights and lasers. One of the first production 1911s with an integrated accessory rail. Type: Semi-Auto Pistol Action: Single-Action Caliber: .45 ACP Capacity: 8 Year introduced: 2009, USA Weight: 39 oz Overall length: 8.5" Status: Active Intended use: Duty, Tactical