Action: Single Action - Caliber: 45 ACP - Capacity: 10 - Finish: Blued - Frame: Steel - Barrel Length: 5 - Sights: Low Profile Dovetail - Overall Length: 8.5 - Weight: 2.49 lb. - The Rock Island Armory M1911-A2 FSP is an outstanding choice for duty defense competition and concealed carry applications. The Rock Island Armory M1911-A2 FSP is a double stack .45 ACP that has an excellent single action trigger making repeatable accuracy a breeze. Complete with a GI Trigger Hammer Beavertail Sights and a Series 70 Firing System the RIA USA M1911-A2 FSP is a new take on an old friend. The thing that really separates Rock Island Armory from their competitors is that Rock Island makes real shooters that are reliable durable accurate and a joy to shoot.