FN 509 Tactical Flat Dark Earth 9mm 4.5-inch 10Rds

Original price was: $899.00.Current price is: $629.30.

FN 509 Tactical Flat Dark Earth 9mm 4.5-inch 10Rds

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FN 509 Tactical FDE

The FN 509 Tactical, an extension of the FN 509 family, is based on FN’s submission pistol that the U.S. Army tested for its Modular Handgun Trials, but includes the significant improvements to the design that were implemented in the FN 509. This pistol features the FN’s patent-pending Low-Profile Optics Mounting System that enables this platform to accept over nine commercially-available miniature red dot (MRD) optics that co-witness with the suppressor-height night sights (such as RMR, Vortex, Burris, etc..) and remain adaptable to future optics releases with no requirement of direct milling of the slide. The slide cap, for use when not shooting with an optic, has raised sight wings that protect iron sight alignment if the pistol is dropped or handled roughly, and provides a textured ramp for racking the slide against a belt loop, pant pocket or boot. That’s right! You can safely “Boot Rack” this here firearm! An FN-signature 4.5-inch, cold hammer-forged, stainless-steel barrel with target crown, 1/2×28  threads that accept the bulk of 9mm suppressors available and thread cap with integrated O-ring to prevent loosening during use complete the top end.

FN 509 Review Video

Compare FN pistols, see specs and models: FN 509, FNS, and FNX.


FN 509 Tactical FDE Specifications:

  • CALIBER: 9mm
  • OPERATION: Double-action
  • MAG CAPACITY: 17/24 Rd.
  • WEIGHT: 27.9 oz.
  • TWIST RATE: 1:10″ RH
  • HEIGHT: 5.75″
  • WIDTH: 1.35″
  • TRIGGER PULL: 5.5 – 7.5 lb.
  • SIGHT RADIUS: 5.79″


  • Striker-fired autoloader
  • 5.5 to 7.5 lbs. Trigger pull
  • FN Low Profile Optics Mounting System
  • Threaded Barrel
  • Suppressor Height Night Sights


  • FN Low Profile Optics Mounting System
  • Sight Protecting Slide Cap
  • External extractor; loaded chamber indicator


  • Cold hammer-forged stainless steel
  • Recessed target crown
  • Polished chamber and feed ramp
  • 1/2×28 threaded Barrel
  • O-Ring retention thread cap


  • Enhanced grip texture which enables faster follow-up shots in all conditions
  • Interchangeable backstraps
  • MIL-STD-1913 accessory mounting rail


  • Fully ambidextrous slide stop lever
  • and magazine release


  • High visibility, low-friction follower; polymer base with black finish


  • Two interchangeable backstraps
  • Three 10rd magazines
  • Owner’s manual
  • Locking device
  • FN logo soft pistol case
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