I recently purchased an FNX-40 (got it as a gift for my brother) and did hours/days of research. Afterwards, I also considered getting the same gun for myself, doing even more research. This is what it all amounted to…
The FNX line is an evolution of the 9mm and .40 caliber FNP pistols to incorporate the better aspects of the .45 caliber model (the .45 caliber FNP is completely different/redesigned from the 9mm and .40 models). The most prominent features are an upgraded FCG, upgraded safety/decocker (old ones were prone to breaking), lower bore axis, full 1913 rail (the FNP’s only had a single 1913 “slot”), and better checkering/grip on the frame.
The FNX also has a stainless slide and barrel, something those who are concerned with corrosion in EDC or harsh environments might appreciate. The black slide is also (blackened) stainless.
The gun also comes with THREE (3) magazines, which is a nice bonus and unheard of with most pistols. The magazines are VERY well designed. We’ve put about 300-400 rounds through the FNX so far; not much in terms of overall testing, but we had zero FTE’s, FTF, etc. Even when purposely limp-wristed, we had no issues whatsoever. Further, the lockable hard case the gun comes with is very nice. It’s custom-fitted to the FNX and it even has a cutout for the safety selector so that the gun MUST be on “safe” to fit it in the case. No, a case shouldn’t be your determining factor when buying a gun, but it does show a lot of thought and quality went into the design.
In regards to issues, the earliest versions of the FCG had a faulty design where the firing action would not be completely supported by the slide and would be transferred into the frame and FCG parts and subsequently the FCG would fail over time. This was corrected during the 3rd redesign of the FCG and none of the newer guns have this issue. Aside from this, there were no major issues with the design.
As far as functionality and usage goes, I like to consider it a less-expensive version of the H&K USP. The gun handles similarly to a USP and has a very similar trigger pull (DA is firm until right before the break, where it has a slight amount of flex to it - SA is simply a pleasure to shoot). Same safety/decocker functions. It’s also VERY accurate and, during with my limited range time with it, my best group at 15 yards was one ragged hole 1" hole. All in all, it’s a copy of the USP (a proven combat pistol), it’s simply new and unproven itself.
Now, in regards to CS, my brother was showing his gun to a friend and the friend hit the mag release and dropped the magazine onto asphalt, nicking the bottom of the magazine. Feeling guilty that it had happened (since I had suggested to the friend to take a look at it), I contacted FN CS and asked them about replacing the floor plate. They said they couldn’t. At first, I was frustrated, but a few minutes on the phone and the CS agent explained that the guns are so new, and the user base so relatively small, that they don’t have part numbers for many items. In the case of the magazine, they can only replace the entire magazine - they physically can’t replace the floor plate because there’s no part number to order it.
That said, that explains why the pistol isn’t very common at gun shops and why few stores stock replacement parts: it’s relatively new and with little support, aside from directly dealing with FN. They’ve also done virtually nothing to market it, instead focusing on their .mil contract weapons. My dealings with CS were very easy and they were very friendly, albeit I was frustrated from not being able to order a new floor plate.
All in all, for the money, I truly believe that there’s no better pistol. Now, I’ll admit I think the H&K USP is overall the greatest pistol of all time (there are pistols that do individual things better, but as a package I think it’s unbeatable), so understand where I’m coming from.
If you’re not on a budget and don’t mind paying $200-400 more for an H&K, or you want to customize your pistol yourself, or you want wide parts and accessories support, it’s not your best choice.
However, if you simply want a pistol designed for combat (time will tell if it indeed can meet that niche), can be carried cocked and locked, has a manual safety/decocker, 1913 rail… basically everything you’d find on a modern service pistol, and want to run the gun right out of the box… all without breaking the bank, then the FNX is for you. You can get them from $480 - $550 new from a reputable dealer (aka Glock prices).