The FN 509 Midsize MRD splits the difference between the full-size and compact 509, offering a Glock 19-equivalent size with a factory optics-ready slide. Features the same controls and magazines as the full-size 509. Type: Semi-Auto Pistol Action: SA Caliber: 9mm Capacity: 15 Year introduced: 2020, Belgium Weight: 25.5 oz Overall length: 7.4" Status: Active Intended use: Law Enforcement, Concealed Carry, Service