FN 509T 509 Tactical 9mm Black 66-100375

Out of Stock


FNH 509T 9MM 4.5 17RD - SEMI BLK NS   FN America FN 509 Tactical, Semi-automatic, Striker Fired, Full, 9MM, 4.5" Barrel, Polymer Frame, Black, 1-24Rd Magazines and 1-17Rd Magaine, No-Manual Safety, Suppressor Height Night Sights, Low Profile Optics Mounting System, Threaded Barrel, Sight Protecting Slide Cap, Loaded Chamber Indicator, Interchangeable Backstraps, 1913 Accessory Rail, Ambi Slide Stop Lever, Ambi Mag Release, FN Soft Case 66-100375

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.


  • Caliber: 9mm
  • Operation: Double-action
  • Mag Capacity: 10 or 17/24 Rd.
  • Weight: 27.9 oz.
  • Barrel Length: 4.5"
  • Overall Length: 7.9"
  • Twist Rate: 1:10" RH
  • Height: 5.75"
  • Width: 1.35"
  • Trigger Pull: 5.5 - 7.5 lb.
  • Sight Radius: 5.79"

Primary Features

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


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 one 24-round magazines or Three 10-round magazines

Owner’s manual

Locking device

FN logo soft pistol case


Categories: Semi Auto Pistols
Condition: New
Manufacturer: FN America
Model: 509T
Caliber: 9mm Luger
SKU: 845737010119
MPN: 66-100375
UPC: 845737010119
Vendor: Gunprime
Reviews (7)
By KARASURAVEN on 05/13/22
A Hidden Gem

I believe the FN 509 Tactical is a very underrated offering. It comes equipped with several features that many people would like to have on their handgun: optic ready with multiple plates, threaded barrel, suppressor height sights, and has ambidextrous controls. GunPrime made the process super easy with awesome pricing and fast shipping.

By DBank57 on 03/18/22
Excellent pistol

I have owned the 509 mid-size MRD for almost two years and have run approximately 10,000 rounds through it in that time period. The reason I chose the 509 Tactical this time is the length of the grip. On the mid-size my support hand pinky finger tended to slip off the bottom of the grip. I remedied this by using 17 round mags with sleeves. With the Tactical I do not have that issue.
With the mid-size I Apexed the trigger immediately upon purchase. I shot 250 rounds through the Tactical and could definitely notice the "gritty" trigger pull of the OEM trigger. Also, I prefer a flat trigger as to the curved OEM trigger. The take up and the reset feels a bit longer in the OEM trigger compared to the Apex trigger.
With the mid-size 509 the ambidextrous mag release was a problem, the pad of the first joint of my "social finger" would cause inadvertent mag dumps, usually at the most inappropriate times. I changed the mag release to a right hand only. So far it does not seem to be a problem with the Tactical. I also opted for an extended slide release for the mid-size and will do so with the Tactical as well as soon as I receive the part.
The last mod I made was changing the upper to an Apex 5.0 barrel. With the upper on the mid-size the balance was a little nose heavy. I swapped the OEM 4.5 upper of the Tactical with the Apex 5.0. Both pistols are well balanced now. Accuracy and distance have improved on both pistols as well.
I would buy both/either of these pistols again because they are American made and of exceptionally high quality. It is an undisputable fact the FN weapons are combat proven. I shoot often and I shoot a lot when I take tactical courses. I have had zero malfunctions and zero down time with these pistols. Watch the deals on Gunprime and you can get these pistols at significant discounts which makes them competitively priced with Glocks.

By bdup on 08/22/20
Easy transaction and great price!

Love my FN 509 Tactical, the extended mags are a bonus!

By Art on 08/11/20

I’ve had it for a few weeks and have fired 500 rounds in it and it is one of the best handguns I’ve shot. The best looking 9mm on the market.

By Adam on 06/22/20
Gunprime was amazing!

Seller review: I purchased this black FN 509t on a whim from gunprime due to the price they offered, it was dang near a steal. Gunprime had an amazingly fast turn around time. I placed an order in the afternoon on a Thursday and that evening it was already being shipped to my FFL. I will do business with them in the future and recommend this company to others.

Product review: this pistol is a great deal for what you get. Suppressor height sights, threaded barrel, two 24 round mags, a 17 round mag, an extra spring, a chamber lock, instructions manual, and a soft carrying case. I also was able to snag the free light offer that was going on as well. Straight out of the box I did have some FTE/FTF (failure to eject/failure to feed) issues and that was due to my idiocy. I did not clean the gun before shooting, but after I cleaned it I haven't had a single issue since. You need to clean it or will have issues. I've put about 1k rounds through it and it's a solid firearm. I highly recommend purchasing one if you're on the fence about it.

Reason for 4/5 stars is that while this firearm is amazing, its not my favorite.

One photo is with the light attached, and the other is next to a S&W M&P40 5 inch barrel for size and reference

User uploaded images:

By Jack on 06/15/20
Perfect Handgun

Conceal carrying this handgun. Love this gun! It’s a great weapon and tons of fun to fire.

By Sam on 06/11/20
Quick and easy!

Fast shipping legit place!

Write your own review