The FN 509M MRD featuring the FN Low Profile Optics Mounting System, gives you the option of direct mounting more than 10 different miniature red dot optics to your concealed carry pistol. With a 4" slide and barrel and a midsize is an easily-concealed package. Features improved controls; improved texturing on the two included backstraps; flat faced trigger; fully ambidextrous controls; MIL-STD-1913 accessory mounting rail; cold hammer-forged stainless steel barrel with a recessed target crown; combat-style sights and improved front and rear cocking serrations. Includes two magazines, case, locking device and owners manual.