The Rock Island Armory Tactical adds adjustable sights, extended thumb safety, beavertail grip safety, and an accessory rail to the GI Standard platform at a very competitive price. Type: Semi-Auto Pistol Action: Single-Action Caliber: .45 ACP Capacity: 8 Year introduced: 1999, Philippines Weight: 38 oz Overall length: 8.7" Status: Active Intended use: Home Defense, Duty, Target