Experience with FNX 45?

[mikeheel]

Circling back around on this thread.

First, I still have my standard FNX-45 and love it. In fact, I love it so much, I recently acquired a tactical version. Now I am debating putting a .460 Rowland conversion kit on the tactical. Heh. Anyone have any experience w/that on an FNX?

 

[Toprudder]

Circling back around on this thread.

First, I still have my standard FNX-45 and love it. In fact, I love it so much, I recently acquired a tactical version. Now I am debating putting a .460 Rowland conversion kit on the tactical. Heh. Anyone have any experience w/that on an FNX?

I would be interested in that as well.

Speaking of FNX45 standard vs tactical, is there a difference in the recoil spring system?

 

[mikeheel]

I'm not 100% sure, but I think the standard and tactical use the same recoil spring. I know that if you want to shoot 45 Super, they recommend installing heavier springs. And Rowland adds heavier springs for their conversion.

 

[Toprudder]

I'm not 100% sure, but I think the standard and tactical use the same recoil spring. I know that if you want to shoot 45 Super, they recommend installing heavier springs. And Rowland adds heavier springs for their conversion.

I was just curious. I have the standard, and I saw a video on cleaning the tactical version, and it appeared to be different internally.

Wolff does not make springs for the FNX45, or I would get a lighter spring. I think I can get a new guide rod for a M&P and then use the M&P springs with it, I just have not tried it yet. The stock spring is stiff enough that I have to use near max loads for it to cycle reliably, my reduced loads that work well in my other guns just won't cycle the FNX.

 

[Walt Sherrill]

Wolff does not make springs for the FNX45, or I would get a lighter spring. I think I can get a new guide rod for a M&P and then use the M&P springs with it, I just have not tried it yet. The stock spring is stiff enough that I have to use near max loads for it to cycle reliably, my reduced loads that work well in my other guns just won't cycle the FNX.

I don't have access to an FNX or FNX Tactical, but think the FNX line uses a captured recoil spring assembly, which doesn't let you change to a lighter or heavier spring. You'll have to go a different route.

• You can leave the slide locked back for a week or so, and you'll see some spring degradation. Do it for another week or two more and you might be able to use lighter loads. And in case anyone questions this possible solution, the FNX-45 Tactical users on the FN Forum do this when running suppressors, to weaken the recoil spring assemblies enough to make the guns cycle properly.

Leaving a coil spring compressed near or at its design limit -- called its elastic limit -- will degrade the spring, and it'll lose some strength. Note: not all coil springs (such as magazine springs) are compressed that far in normal use, but recoil springs probably will be at or near that limit when locked back. The longer they're left locked back, the more degradation can take place. (Some high-cap magazine springs are also at or near their design limits when fully loaded.)

While Glock doesn't have springs for the FNX line, they do offer some guides rods and springs for Glocks, and additional recoil springs that are not "captured" assemblies. I found that I could swap my FNS-40 and Glock 38 recoil spring assemblies. (The Glock 38 uses the same guide rod assembly as the Glock 19 and Glock 23, for example, and Glock adjusts the weight of the the slides to compensate for the differen calibers being shot.)

You'll have to do some measuring to be sure. (If you have friends with Glocks, you might get them to help you do some comparisons. Then, you might find a separate "Glock" guide rod from Wolfe and some suitable springs that will offer you another option.

 

[fishgutzy]

I don't have access to an FNX or FNX Tactical, but think the FNX line uses a captured recoil spring assembly, which doesn't let you change to a lighter or heavier spring. You'll have to go a different route.

• You can leave the slide locked back for a week or so, and you'll see some spring degradation. Do it for another week or two more and you might be able to use lighter loads. And in case anyone questions this possible solution, the FNX-45 Tactical users on the FN Forum do this when running suppressors, to weaken the recoil spring assemblies enough to make the guns cycle properly.

Leaving a coil spring compressed near or at its design limit -- called its elastic limit -- will degrade the spring, and it'll lose some strength. Note: not all coil springs (such as magazine springs) are compressed that far in normal use, but recoil springs probably will be at or near that limit when locked back. The longer they're left locked back, the more degradation can take place. (Some high-cap magazine springs are also at or near their design limits when fully loaded.)

While Glock doesn't have springs for the FNX line, they do offer some guides rods and springs for Glocks, and additional recoil springs that are not "captured" assemblies. I found that I could swap my FNS-40 and Glock 38 recoil spring assemblies. (The Glock 38 uses the same guide rod assembly as the Glock 19 and Glock 23, for example, and Glock adjusts the weight of the the slides to compensate for the differen calibers being shot.)

You'll have to do some measuring to be sure. (If you have friends with Glocks, you might get them to help you do some comparisons. Then, you might find a separate "Glock" guide rod from Wolfe and some suitable springs that will offer you another option.

There are after market recoil springs available for the FNX45. Easy to change, like most pistols.

Sent from my SM-G970U using Tapatalk

 

[Walt Sherrill]

There are after market recoil springs available for the FNX45. Easy to change, like most pistols.

The only thing I've seen, thus far is this one, which is a recoil reduction kit -- link shown below -- and that is not exactly what we've been talking about (and probably NOT what you're referencing.) This one may work, but since it's intent is to reduce FELT recoil, it may not make the gun function any better.

But since I don't have an FNX-45 (or 45 Tactical) and a compelling need, I may have missed the obvious.

If you know of other sources, please share them here -- as the original poster can probably use the info. I'll pass it on to the folks on the FN Forum who have had similar issues.

(Just locking the slide back for a week or so may reduce recoil spring strength enough to make the gun function.)

https://zahal.org/product/fn-herstal-fnx-45-tactical-recoil-reduction-spring-rod-dpm-systems/

 

[Relapse]

Got to shoot one suppressed a while back. Big sucker but fun. With a spotter calling was able to dial in clay pigeons at 50 yards or so. Smooth operator and not too loud. They might be expensive though, especially with can.