FN Herstal 509 Tactical - Four Score and Seven Firearms LLC Production Website

Four Score and Seven Firearms LLC
Four Score and Seven Firearms LLC
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FN Herstal 509 Tactical

SKU FN Herstal 509 Tactical
MSRP - $1049.00  FN66-100373 (FDE - 1 17rd /2 24rd)
                                 FN66-100375 (Black - 1 17rd 2 24rd)
                                 FN66-100383 (FDE - 3 10rd)

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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. The pistol features the company’s U.S Patent
No. 10/352,654 Low-Profile Optics Mounting System™ that enables the
platform to accept more than ten commercially-available miniature red dot
(MRD) optics that co-witness with the suppressor-height night sights 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 jostled, and provides a textured ramp for racking the slide
against a belt loop, pant pocket or boot. An FN-signature 4.5-inch, cold
hammer-forged, stainless-steel barrel with target crown, ½” x 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.
Lastly, the 24-round magazines, nearly identical in length to the pistol’s
slide, maximize ammunition capacity without impacting carry convenience.

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

Polymer construction with replaceable steel frame/slide rails
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
One 17-round and two 24-round magazines or Three 10-round magazines
Owner’s manual
Locking device
FN logo soft pistol case
$ 899.00
  • CALIBER: 9mm
  • OPERATION: Double-action
  • MAG CAPACITY: 10 or 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™ (U.S. Patent No. 10/352,654)
Threaded Barrel
Suppressor Height Trijicon 3-Dot Green Tritium Night Sights

FN Low Profile Optics Mounting System™ (U.S. Patent No. 10/352,654)
Sight Protecting Slide Cap
External extractor; loaded chamber indicator
Four Score and Seven Firearms LLC
461 Pheasant Ridge Rd
Lake Zurich, IL 60047
(630) 222-8131
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