Caliber: 9mm. Capacity: 10-, 12- or 15-round magazine. Barrel: 3.7 in. Grips: Textured grip, interchangeable backstraps. Sights: Fixed, tall co-witness; FN Low Profile Optics Mounting System. Length: 6.8 in. overall. Weight: 25.5 oz. unloaded. Finish: Black or FDE.