Calibers: 9mm. Capacity: 10-,15-, 17-, or 20-round magazine. Barrel: 4.09” or 4.49”. Weight: 25.7 or 31.2 oz. Length: 7.32” or 8.04” overall. Sights: Fixed square notch rear sight with contrast points, optics-ready. Features: Striker-fired system. Ergonomic grip design with interchangeable back straps and side panels. VP9A1 F is full size, VP9A1 K is compact. Some models equipped with Holosun SCS or Vortex optic. Made in U.S.