FN 509 Midsize Semi-Automatic Pistol


Product Overview

The FN 509 Midsize Pistol is the perfect way to upgrade your EDC. This ideal combination of a four-inch slide and barrel with a midsize frame retains full-sized pistol performance in an easily-concealed package. The FN 509 Midsize 9mm pistol ships standard with either a 10 or 15-round capacity and is compatible with all FN 509 magazines with the 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. Includes two interchangeable backstraps, two 10 or 15-round magazines, owner’s manual, locking device, and FN logo soft pistol case.


FN 509 Midsize Semi-Automatic Pistol



  • Caliber: 9mm
  • Operation: Double-action
  • 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″
  • Primary Features
  • Full-sized performance in a concealed carry package
  • Striker-fired autoloader
  • Double-action operation
  • Fully ambidextrous controls
  • Offered as a non-manual safety model
  • Fixed 3-dot luminescent sights
  • Slide is easily racked, combat-style sights
  • External extractor; loaded chamber indicator
  • Improved front and rear cocking serrations
  • Cold hammer-forged stainless steel barrel
  • Recessed target crown
  • Polished chamber and feed ramp
  • Frame features 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
  • Fully ambidextrous slide stop lever and magazine release
  • High visibility, low-friction follower; polymer base with black finish


Product Information

Cartridge9mm Luger
Capacity15+1 Round
Weight26.5 Ounce
Barrel Length4 Inches
Action TypeSemi-Automatic
Trigger TypeDouble Action
Threaded MuzzleNo
Barrel FinishStainless Steel
Front SightNight Sight
Rear SightNight Sight
Case IncludedYes
Frame MaterialPolymer
Grip MaterialPolymer
Frame FinishFlat Dark Earth
Magazine Quantity2
Slide FinishFlat Dark Earth
Grip StyleCheckered
Grip ColorBlack
Country of OriginUnited States of America
AccessoriesMRD Cut
Trigger Pull5.5-7.5 Pound

Delivery Information

Must Ship to FFL Dealer
Shipping Weight
3.170 Pounds

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