Arm yourself with the FN 509 MRD 9mm Double Action Pistol. It is double action with a 10-round capacity. The cold hammer forged steel with a black finish is 4.5-inches long, and it is equipped with a black polymer grip. The Co-Witness iron sights finish off the design. FN 509 MRD 9mm Double Action Pistol - Handgun Semiauto Center Fire at Academy Sports