FN 509M Gen 1 FDE 9mm DAO Pistol, 15+1 RD, Interchangeable BackstrapProduct InformationName: FN 509M Gen 1 FDE 9mm DAO Pistol, 15+1 RD, Interchangeable BackstrapCaliber: 9mmBarrel Length: 4"Capacity: 15 roundsBrand: FN HerstalCategory: Full Size HandgunsJavaScript is required for the full interactive experience including reviews, questions, and detailed specifications.