FN 509 Midsize MRD 9mm Black Optic Ready Pistol

  • Item Number: 66-100587
  • /
  • View More Items by FN
  • /
  • Condition: NEW
FN 509 Midsize MRD 9mm Black Optic Ready Pistol
To see our price, add this item to your cart.
Adding this item won't require you to purchase the product. You can easily remove it from your cart if you decide not to buy it.
Why don't we show the price?
We wish we could, and we realize that this is an inconvenience. Some manufacturers have a minimum advertised price (MAP) for their products. If our price is lower than their MAP, the manufacturer does not allow us to show you our price until you add the item to your shopping cart.

$429.99 after applicable rebate .
Learn more
Temporarily Out of Stock

Includes FREE shipping

Manufacturer Rebate

509 Season

Receive $100 back after a mail-in rebate when you purchase a new FN 509. FN 509®s with Holosun Optics are excluded from this rebate offer.
Offer expires Oct 14, 2025

Shop all eligible items Rebate form/details
  • SPRINGFIELD ECHELON 9MM COMPACT 4 IN THREADED BARREL WITH OPTIC 5 MAGS AND RANGE BAG

    Springfield Echelon 4.0C 9mm Pistol with Threaded Barrel, Viridian Green Dot, Five Magazines and Range Bag
    $1,072.97 $549.99

  • FNH 509T 9MM PISTOL BLK WITH VORTEX VIPER RED-DOT SIGHT

    FN 509 Tactical 9mm Black Pistol with Vortex Viper Red-Dot Sight
    $1,159.00

  • RUGER EC9S 9MM BLACK PISTOL 3.12 IN BBL

    Ruger EC9s 9mm Striker-Fired Pistol
    $349.00 $219.99

  • KELTEC P15 9MM PISTOL

    Kel-Tec P15 9mm Pistol
    $229.99

  • SPRINGFIELD HELLCAT PRO 9MM COMP BLK OSP NS25 W/ RFX GREEN DOT

    Springfield Hellcat Pro Comp 9mm Pistol with Viridian Green Dot, 3 Extra Magazines and Range Bag
    $835.00 $599.99

  • SPRINGFIELD HELLCAT PRO COMPACT OSP 9 MM 3.8 IN BARREL 3-15 RD AND 2-17 RD MAGS

    Springfield Hellcat Pro OSP 9mm Semi-Auto Pistol Gear-Up Package with Five Magazines and Crimson Trace Red Dot
    $569.99

  • KIMBER MICRO 9 CINDER 9 MM

    Kimber Micro 9 Cinder 9mm Semi-Auto Pistol
    $419.99

  • ROST MARTIN RM1C 9MM GRAY 4 IN BBL VIRIDIAN RFX11 GREEN DOT 5 MAGS SAVIOR BAG

    Rost Martin RM1C 9mm Gray Pistol with Viridian RFX Green Dot, Five Mags and Savior Bag
    $479.00 $449.00

  • BERETTA APX-A1 COMP TACTICAL 9MM 4.2 IN THREADED BBL 15 RD MAG

    Beretta APX-A1 Compact Tactical 9mm Optic Ready Pistol with Threaded Barrel
    $549.00 $499.00

  • WALTHER PDP COMPACT 9MM OPTIC READY STRIKER-FIRED PISTOL WITH 5 INCH BARREL

    Walther PDP Compact 9mm Optic Ready Striker-Fired Pistol with 5 Inch Barrel
    $649.00 $449.99

  • RUGER EC9S 9MM GRAY FRAME BLACK SLIDE 3.12 IN BBL

    Ruger EC9s 9mm Carry Conceal Pistol with Gray Frame
    $369.00 $219.99

  • SIG SAUER P365 9MM OPTIC READY TACPAC W/ HOLSTER AND THREE 12-ROUND MAGAZINES

    Sig Sauer P365 9mm Optic Ready TacPac Pistol w/ Manual Safety, Holster and Three 12-Round
    $529.99

  • CCI 9mm 115 gr FMJ-RN Blazer Brass 50/Box

    CCI 9mm 115 gr FMJ-RN Blazer Brass 50/Box
    $24.99 $10.98
    ($0.22 / round)

  • CCI 9mm 124 gr FMJ Blazer Brass 50/Box

    CCI 9mm 124 gr FMJ Blazer Brass 50/Box
    $25.99 $10.99
    ($0.22 / round)

  • Maxx Tech 9mm Luger 115 gr FMJ Brass Case Target Ammo 50/Box

    Maxx Tech 9mm Luger 115 gr FMJ Brass Case Target Ammo 50/Box
    $16.95 $11.99
    ($0.24 / round)

  • CCI 9mm Luger 100 gr FMJ Blazer Brass Reduced Recoil 50/Box

    CCI 9mm Luger 100 gr FMJ Blazer Brass Reduced Recoil 50/Box
    $23.99 $11.99
    ($0.24 / round)

  • Norma 9mm 158 gr TMJ Subsonic Rival Competition 50/Box

    Norma 9mm 158 gr TMJ Subsonic Rival Competition 50/Box
    $19.99
    ($0.40 / round)

  • Wolf Ammo 9mm 115 gr FMJ Bimetal Steel Performance Ammunition 50/Box

    Wolf Ammo 9mm 115 gr FMJ Bimetal Steel Performance Ammunition 50/Box
    $8.99
    ($0.18 / round)

  • Hornady 9mm Luger 100 gr FTX Critical Defense Lite 25/Box

    Hornady 9mm Luger 100 gr FTX Critical Defense Lite 25/Box
    $22.49
    ($0.90 / round)

  • Hornady 9mm 115gr FTX Critical Defense 100 Rounds in Ammo Can

    Hornady 9mm 115gr FTX Critical Defense 100 Rounds in Ammo Can
    $94.99
    ($0.95 / round)

  • Federal 9mm Luger 115 gr FMJ American Eagle  50/Box

    Federal 9mm Luger 115 gr FMJ American Eagle 50/Box
    $24.99 $16.99
    ($0.34 / round)

  • Hornady 9mm 115 gr Critical Defense 25/Box

    Hornady 9mm 115 gr Critical Defense 25/Box
    $22.49
    ($0.90 / round)

  • Remington 9mm 115 Gr FMJ Range 50/Box

    Remington 9mm 115 Gr FMJ Range 50/Box
    $23.99 $14.99
    ($0.30 / round)

  • Hornady 9mm Luger +P 124 gr XTP American Gunner 25/Box

    Hornady 9mm Luger +P 124 gr XTP American Gunner 25/Box
    $22.17 $18.99
    ($0.76 / round)

Product Description

What's in the Box

  • FN 509 Midsize MRD NMS 9mm Pistol
  • (2) 15-Round Magazines
  • (2) Interchangeable Backstrap
  • Cable Lock
  • Owner's Manual

Your EDC just got better with the all-new FN 509® Midsize MRD.

This evolution of the FN 509 Midsize, now 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. The FN 509 Midsize MRD features a four-inch barrel and slide with optics mounting package, a midsized frame, standard 15-round capacity and is compatible with larger capacity FN 509 magazines with use of a sleeve. The improved controls aid in manipulation, the new improved texturing on the two included backstraps provides better recoil management, and a new flatter faced trigger allows for more controllable trigger press and cleaner break.

Product Features

  • Full-sized performance in a concealed carry package
  • Striker-fired autoloader
  • Double-action operation
  • Fully ambidextrous controls
  • FN Low Profile Optic Mounting System with plate adapters for direct mounting of more than 10 optics
  • All-black co-witness iron sights
  • Slide
    • Easily racked, combat-style sights
    • External extractor; loaded chamber indicator
    • Improved front and rear cocking serrations
  • Barrel
    • Cold hammer-forged stainless steel
    • Recessed target crown
    • Polished chamber and feed ramp
  • Frame
    • Polymer construction with replaceable steel frame/slide rails
    • Enhanced grip textures which enables faster follow-up shots in all conditions
    • Interchangeable backstraps
    • MIL-STD-1913 accessory mounting rail
    • Improved flatter face trigger
  • Operation Controls
    • Fully ambidextrous slide stop lever and magazine release
  • Magazine
    • High visibility, low-friction follower; polymer base with black finish
    • Compatible with FN 509 17-round and 24-round magazines with appropriate magazine sleeves

Firearm Specifications

  • CALIBER: 9mm
  • OPERATION: Double-action
  • MAG CAPACITY: 15 Rounds
  • WEIGHT: 26.5 oz.
  • BARREL LENGTH: 4.0"
  • OVERALL LENGTH: 7.4"
  • TWIST RATE: 1:10" RH
  • HEIGHT: 5.2"
  • WIDTH: 1.35"
  • TRIGGER PULL: 5.5 - 7.5 lb.
  • SIGHT RADIUS: 5.79"

Customer Comments & Questions

Customer Reviews

No reviews have been written for this product.

Write a review