FN 309 MRD #11763 & 64, 9mm, 3.8" barrel, Optics ready slide (Compatible with pistol red dot optics that share the Leupold DeltaPoint Pro or Shield RMS footprints), 16 rd and 20 rd mags (1 ea), fiber optic front sight, white outline rear sight, weight approx. 22.5 oz.