The FN 309 MRD is FN performance made easy - a lightweight, optics-ready 9mm pistol with high capacity magazines and many easy-to-use features - perfect for new shooters and everyday defense. 3.8-inch alloy steel barrel, machine-gun grade, with recessed target crown. Specifications and Features: Caliber: 9mm Magazine: 16/20 Rd. Weight: 22.5 oz. Barrel Length: 3.8"