FN FNX-45T Tactical 45 acp 15rd FNX45 Black 66966

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Improving on the FNP-45 Tactical, developed for the U.S. Joint Combat Pistol Program, the FNX-45 Tactical was born and bred for battle. Like its legendary FN forefathers, this combat handgun was designed to not only survive the battlefield, but to emerge victorious. It is the latest in technological advancements in handgun engineering, offering .45 ACP performance and a host of unique features that no other handgun can match.

Its 15-round magazine is precisely engineered to take a dive to the prone position and naturally roll up toward the target. The checkered polymer frame has a low-bore axis for reduced felt recoil, enhanced operator control, and a grip angle that provides unmatched natural point of aim. Four interchangeable backstraps come standard to quickly customize the grip feel. All operating controls are fully ambidextrous for ease of use. The 5.3″ cold hammer-forged stainless steel barrel has a threaded muzzle to accept sound suppressors, compensators, and other accessories. The stainless steel slide has high-profile combat night sights and includes two mounting bases to accept multiple styles of optional red-dot electronic sights.


  • CALIBER: .45 ACP
  • OPERATION: Double-action/Single-action
  • MAG CAPACITY: 10 or 15 Rd.
  • WEIGHT: 33.3 oz.
  • TWIST RATE: 1:16" RH
  • HEIGHT: 6.5"
  • WIDTH: 1.58"
  • TRIGGER PULL: 8.8 - 12.1 lb. or 3.96 - 5.06 lb.
  • SIGHT RADIUS: 6.4"


  • Raised 3-dot night sights (standard) allow for one-handed operation
  • The width of the raised night sights perfectly size up the shoulder width of a target at 25 meters


  • Stainless steel construction
  • External extractor with loaded chamber indicator
  • Front and rear cocking serrations
  • Slide cut and threaded for optional electronic red-dot sight (not included)
  • Raised night sights for suppressor use


  • Cold hammer-forged stainless steel
  • Polished chamber and feed ramp
  • Threaded .578×28 tpi with thread protector

FNX 45 Tactical FRAME

  • Polymer construction with replaceable steel frame/slide rails
  • Four interchangeable backstraps with lanyard eyelets
  • MIL-STD-1913 accessory mounting rail
  • Serrated trigger guard
  • Matte black finish


  • Fully-ambidextrous decocking/safety levers, slide stop lever, and magazine release


  • Polished body
  • Low-friction follower
  • Polymer base

FNX 45 Tactical SIGHTS

  • Includes two mounting bases for optional red-dot electronic sights


  • Two 15-round magazines
  • Fitted, soft Cordura® nylon case
  • Owner’s manual
  • Four interchangeable backstraps
  • Locking device
  • Sight mounting kit with plates and screws
Condition: New
Manufacturer: FN America
Model: FNX-45 Tactical
Caliber: 45 Auto / ACP
SKU: 845737000912
MPN: 66966
UPC: 845737000912
Vendor: Gunprime
Reviews (12)
By BD on 08/30/23
Big Dependable Firepower

I wanted a bed stand gun that was rugged, dependable, and suppressor ready with a nice trigger and sights. I added a 2 round mag extension that uses the OEM spring and follower...gun has run like a sewing machine since the first round down range. It's big, but not crazy large and my medium size hands can control the mighty 45 acp with no issue. I also like that no power is lost using the naturally suppressed 230 g 45 acp round. All in all it's a great add to my collection.

By Shooteminthehead on 03/10/23
Probably my favorite handgun!

FNX-45's! I own a few! Premium firearms! Some without the threaded bbl! Form and fitment are amazing. Just feels so good in ur hand! Operate flawlessly! No FTFs! FN has really outdone themselves! I also own one in FDE!

By Wallace on 12/28/21

First of all, this pistol is very nice to shoot. It feels very comfortable in my hand. I have big hands and it feels a very nice fit. Shooting it with my can (suppressor) is ideal. I bought the pistol after buying the suppressor. Kinda backwards, but purposely.
Dealing with Gunprime has been a trouble and stress free experience. This is my third purchase from Gunprime. Every single one has been 100% accurate and quick. Delivery has been within 3 to 5 days after purchase. I hate to pay extra fees, so dealing with Gunprime there are no extra fees, just shipping. If I ever buy another firearm, I will be buying from Gunprime. I will wait if the pistol is not on stock. Thanks Gunprime, 3 times and perfect.

By elperroferoz on 10/14/21
Great gun, just slightly less than I expected

It's a really fine pistol. Once I changed the backstrap it fit in my hand really well and is easy to control & keep ahold of when firing. Pretty easy to break down & clean, nothing out of the ordinary there. It's descently accurate. For the most part it's an excellent gun. The only reasons that I give it a 4 star rating is that it's just not as accurate as my HK45, nor does it feel as good shooting, and the HK just seems a bit more well built, and all at a lower price point. The FNX-45 is a great gun, but the price is a little steep in my opinion, even with the $250 savings due to the price that Gunprime offered. I'm happy with my purchase, but I just had higher hopes for the FNX-45. Gunprime has been a great place to purchase a firearm for me. No hassle transaction with decently quick shipping, and great pricing. Can't be beat in my opinion. Thanks Gunprime!

By Big jay on 07/15/21
Always amazing!

Fnx is absolutely perfect. Feels like I'm shooting my FN 509. Love 1911's but this is next level. Get one!

By Florida Shooter on 06/21/21
Excellent experience

This is my second purchase from GunPrime, and as before the price was the lowest I could find, the shipping was extremely fast, and the product was in excellent shape.

I'd highly recommend Gun Prime. I will probably use them again.

By Richie C on 04/20/21

Fnx tactical 45 was everything I expected from this gun.

By Robert T on 08/02/20
Best gun in 45 acp for defense and offense use

This is a great gun even my wife who really never shoots had no problem. This gun is not to be confused with the competition 45’s this is a home defense and offense weapon. Love the way this shoots and feels. The grip is one of its best features I have massive hands and always have a hard time with small weapons. The fnx-45 tactical is going to be my new side arm.

By Guido on 07/16/20
Amazing weapon, incredible service and pricing

This is a magnificent weapon. I can practically feel its pedigree when I fire it.
It is extremely accurate and easy to fire well, the size and relative bulk help with that, but it goes deeper.
I would absolutely purchase this weapon again, and am considering the acquisition of a second one, kind of a "two is one, one is none" approach.
Gunprime, props to you for making this so easy to not only buy, but get into my hands.

By The Rick M. on 06/16/20

One of the best Guns ever made!! A dream gun for some and a dream to shoot.. Couldn’t have this gun if it wasn’t for this sites deal on it!!

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By Drew on 06/15/20
Great gun, great price

Second firearm I’ve bought from gun prime and both time they saved me over $200. FNX 45 tac is an amazing double stack .45. You won’t be disappointed

By Tactical Plus on 06/14/20
45 acp Goodness

Have a few buddies that have this, and finally caved to get my own. The idea is to get it when it goes on sale!!

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