The Rock Island Ultra FS HC (Full Size High Capacity) is a double-stack .45 ACP 1911 with 13+1 capacity. Adjustable sights, beavertail, and extended controls at a competitive price point. Type: Semi-Auto Pistol Action: Single-Action Caliber: .45 ACP Capacity: 13 Year introduced: 2008, Philippines Weight: 43 oz Overall length: 8.7" Status: Active Intended use: Home Defense, Competition, Duty