FN 509 MRD Features The striker-fired action runs a trigger that breaks between 4.5 lb and 6 lb a weight chosen to be safe under stress yet clean enough for accurate work at speed. Barrel steel is FN s proprietary machine gun-grade stainless cold hammer-forged and finished with a polished chamber and feed ramp so feeding stays reliable across defensive hollow points and bulk range ammunition alike. An external extractor and a loaded chamber visual indicator make a status check quick and certain and deep slide serrations give a positive grip for press checks or clearing a stoppage in a hurry. For duty carry and home defense those are the details that decide whether a pistol simply works when it is asked to. Full-size proportions are the point here: the longer slide adds weight where it slows muzzle rise and stretches the sight radius to 6.3 in which tightens the iron sight picture on longer shots. The pistol measures 7.9 in overall 5.56 in tall and 1.35 in wide at 27 oz and the enhanced grip texture keeps the hand locked in place through fast follow-up shots in rain sweat or cold. Three interchangeable backstraps let the grip circumference be matched to the shooter instead of the other way around. For anyone who has fought a grip that was never quite right that fitting alone changes how a pistol shoots. Each 509 MRD ships with two 17-round magazines fitted with high-visibility low-friction followers four MRD mounting plates an owner s manual a locking device and an FN case so nothing else needs buying to get a dot on the gun. A trigger safety and the accessory rail molded into the frame cover the two ends of a defensive setup from safe handling to a mounted white light. The 509 family spans Compact Midsize Standard and Full-size frames letting an owner keep the same controls across a carry gun and a nightstand gun. For shooters building a complete 9mm duty package in one purchase the FN 509 MRD is available for sale at GrabAGun. FN 509 MRD Specifications Brand: FN Model: 509 MRD Type: Semi-Auto Pistol Action: Striker Fired Caliber: 9mm Capacity: 17+1 Magazines Included: 2 Barrel Length: 4.5 Barrel Material: Cold Hammer Forged Stainless Steel Barrel Finish: Black Muzzle: Recessed Target Crown Twist Rate: 1:10 RH Slide Finish: Black PVD Slide Description: Optic Cut Stainless Steel Frame Material: Polymer Frame Finish: Black Frame Description: Polymer Frame with Picatinny Rail Grips: Black Polymer with Interchangeable Backstraps Sights: Co-Witness Iron Sights Sight Type: Fixed Safety: Trigger Safety Hand: Ambidextrous Controls Overall Length: 7.9 Weight: 27 oz Case: FN Case Available At: GrabAGun