Is your FX9 Reliable?

100 or two flawless rounds through the wife's a week back. Run through the provided SGM mag and factory Glock mags in various lengths. 124 gr RN campros over titegroup. Rifle was dry as a popcorn fart upon arrival. Cleaned thoroughly, and well lubed pre-range. Personally I like it more than her NR Storm, but equally reliable IMHO. Accuracy is very impressive out to 50, even with a non-magnified red dot.
 
I've put upwards of 400 rounds through mine now with 100% function when it came to ammo. Curiously, I do not have reliable bolt lock-back with oem Glock magazines but the Magpul and supplied magazine work flawlessly.

Rounds fired:
Federal AE 124gr TMJ
Reloads 147gr Frontier on 3gr titegroup
Reloads 124gr Campro on 4gr titegroup
Reloads 115gr Campro on 4.2gr titegroup

Very pleased so far. The only let-down was the gun will not accept a RRA National Match 2 Stage trigger assembly. The hammer can't travel down far enough to allow the bcg to fully traverse the action. I was able to get the barrel nut off by modifying a Midwest Industries barrel nut tool. The upper sat solidly in my AR upper vise blocks and the nut broke loose after a reasonable amount of torque was applied. The 18" Midwest G3 m-series handguard is a perfect match for the 18.6" barrel in my opinion and despite the added length it is 6 grams lighter than the OEM handguard & original barrel nut.

vvRf6p8.jpg
 
That is looking pretty nice Jager ! I too have found Magpul ( and the supplied magazine ) work flawlessly but oem Glock mags are very hit and miss as to whether or not they will lock back . No matter what ammo as far as I can tell. I see you like Titegroup as well. I must start experimenting with different weight projectiles but I’m lucky enough to have a good friend that casts 130 gr and powder coats them for a third of the price of commercial products.

Wondering if there is anything that can be done to improve accuracy in the 100-200 yd range with a pcc ?

I’ve found the FX-9 accurate out to 50 yds ( where 90% of my shots will be made ) , followed by semi- accurate from there to 100 yds and then it’s spray and pray from there to 200.

I do understand the nature of the 9mm projectile in this roll . Just wondering if there are ways to deal with the performance.
 
Ive got some 800x and HS-6 to try, CFE pistol also looks like a little more velocity can be had than TG.

Who knows what the groups will be like but they're a little slower burn and show just over 1100fps from a 4 inch barrel according to a quick search of the Hodgdon site.
 
Has anyone done the bolt mod? Does it actually improve function?
Mine has only got 100 rounds so far and other than a couple stove pipe type failures it's been very reliable.
Is it worth doing? Mine seems to be getting better the more I shoot it, was thinking of just continuing on and seeing if the failures stop after another hundred or two.
My 9mm AR is 100% even after 1000 without cleaning, I'm hoping this rifle gets to the same level of reliability after a few hundred rounds to really get the parts broken in.
So far internal wear is almost zero, there are no spots where the surface is worn through the nitriding and function is improving. The only wear I've noticed is where the charge handle has worn the coating off the castle nut.
 
cr5 said:
The only wear I've noticed is where the charge handle has worn the coating off the castle nut.
Click to expand...

I noticed the same thing on mine, right out of the box that the castle nut was worn even without me using the charging handle once.

Speaking of charging handles were you able to get that extended latch installed?
 
cr5 said:
Has anyone done the bolt mod? Does it actually improve function?
Mine has only got 100 rounds so far and other than a couple stove pipe type failures it's been very reliable.
Is it worth doing? Mine seems to be getting better the more I shoot it, was thinking of just continuing on and seeing if the failures stop after another hundred or two.
My 9mm AR is 100% even after 1000 without cleaning, I'm hoping this rifle gets to the same level of reliability after a few hundred rounds to really get the parts broken in.
So far internal wear is almost zero, there are no spots where the surface is worn through the nitriding and function is improving. The only wear I've noticed is where the charge handle has worn the coating off the castle nut.
Click to expand...

I sent my bolt back to Wolverine and they did it free of charge, i have only fire about 20 rounds since i got the bolt back, so i can't say if it made a difference yet
 
terBC said:
I noticed the same thing on mine, right out of the box that the castle nut was worn even without me using the charging handle once.

Speaking of charging handles were you able to get that extended latch installed?
Click to expand...

Charge handle wearing the castle nut is fairly normal, I only mention it because it's the only wear I can see so far. I pulled the bolt the other day and even the roller guide thingy on the top still looks new.

I didn't buy an extended latch, not going to waste any money on stuff like that.
I do have an extended latch in my parts box, maybe I'll see if it will fit, I like my stuff thin and low drag, I sling and carry my rifles a lot on my property so I don't like it when they've got stuff poking me in the back or snagging my jacket when I move.

The only thing I might consider is a trigger upgrade some day but I'll hold off for at least 1000 rounds until the factory trigger has smoothed out, after that I'll reevaluate. These aren't precision rifles though, I don't want a light trigger.

So far the only thing I've noticed that it's missing is a couple QD sockets on the hand guard. I'd like one a couple inches in front of the receiver (just like the pics from Jägger above).
I'll be buying an Mlok one next time I stop in at Tier One in Edmonton. Maybe an Ergo or MOE+ grip as well, the MIAD is comfy but I like the rubber overmold grips better.

My advice is to get 1000 rounds through these before going too crazy on the modifications.
The trigger should smooth out like all AR milspec triggers do and the charge handle isn't really all that bad as long as you're not trying to use it with mittens. I haven't had any issues charging my rifle anyway, ymmv.
 
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Took mine apart at 1423 rounds (33 fte/stovepipe) and found this.
image.jpg
As well, the roll pin in the buffer was walking out.

As well as this,
image.jpg
This is the bottom of the bolt, you can see the spring where the metal has worn away. They told me this was fairly normal and wouldn't have any effect on function. It doesn't seem to be causing issues.

Because of the damaged buffer and the fte's I've been getting, I sent it to Wolverine for warranty work. They replaced the buffer and I believe they filed the bottom edge of the extractor to help with extraction. The impression I got from them is the extraction issues are fairly common but the fix is easy. They test fired 50x with no issue. I will take it out in a day or two and see if I notice any improvement.

On a side note, Wolverine was great to deal with and was quick to respond to any of my inquiries.
 

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Betty-Lou said:
Took mine apart at 1423 rounds (33 fte/stovepipe) and found this.
View attachment 258964
As well, the roll pin in the buffer was walking out.

As well as this,
View attachment 258968
This is the bottom of the bolt, you can see the spring where the metal has worn away. They told me this was fairly normal and wouldn't have any effect on function. It doesn't seem to be causing issues.

Because of the damaged buffer and the fte's I've been getting, I sent it to Wolverine for warranty work. They replaced the buffer and I believe they filed the bottom edge of the extractor to help with extraction. The impression I got from them is the extraction issues are fairly common but the fix is easy. They test fired 50x with no issue. I will take it out in a day or two and see if I notice any improvement.

On a side note, Wolverine was great to deal with and was quick to respond to any of my inquiries.
Click to expand...

What ammo were you using?
Looks like it's cycling really hard.



Jäger said:
I've put upwards of 400 rounds through mine now with 100% function when it came to ammo. Curiously, I do not have reliable bolt lock-back with oem Glock magazines but the Magpul and supplied magazine work flawlessly
Click to expand...

Mine has failed to lock back a couple times with Glock brand Canadian 10 round G-17 magazines.
My Vector does the same thing from time to time so I'm not worried about it.
 
cr5 said:
What ammo were you using?
Looks like it's cycling really hard.
Click to expand...

Mine beat my buffer to #### as well. Mild reloads of 4.0 gr Titegroup and 124 gr Campro.

I'm running it with a Spikes T3 now and it hasn't ruined it, yet.

It needs more weight in the bolt and buffer, a stiffer spring, or both to keep it from beating itself to death. While I do have mine running well now, it's not nearly as well thought out or reliable as my Ruger PC Carbine.
 
Stevo said:
Mine beat my buffer to #### as well. Mild reloads of 4.0 gr Titegroup and 124 gr Campro.

I'm running it with a Spikes T3 now and it hasn't ruined it, yet.

It needs more weight in the bolt and buffer, a stiffer spring, or both to keep it from beating itself to death. While I do have mine running well now, it's not nearly as well thought out or reliable as my Ruger PC Carbine.
Click to expand...

What kind of buffer does it come with? Thinking of buying one. I already have a 9mm buffer.
 
M&P 40 said:
Blow backs are hard on buffers. I run rifle length buffer springs in my other PCC’s to help slow down the BCG but haven’t tried it on my FX-9 yet.
Click to expand...

I'm surprised that would work, a rifle spring has a few more coils, I would think it would bottom out the spring before the buffer actually hit the back of the tube.

I've got a few buffers and springs in the box. If it will work I might try my Enidine hydraulic buffer, it makes a 223 feel like a 22LR.
It all depends how the original buffer looks though.

Stevo said:
Mine beat my buffer to #### as well. Mild reloads of 4.0 gr Titegroup and 124 gr Campro.

I'm running it with a Spikes T3 now and it hasn't ruined it, yet.

It needs more weight in the bolt and buffer, a stiffer spring, or both to keep it from beating itself to death. While I do have mine running well now, it's not nearly as well thought out or reliable as my Ruger PC Carbine.
Click to expand...

Hmmm, my closest powder disk throws 4.1 of TG and I'm putting it under a 124 campro.
I'll open mine today but with only 100 rounds through it I'm not expecting to see much.


Edit:
Just checked mine, buffer still looks like new.
 
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cr5 said:
I'm surprised that would work, a rifle spring has a few more coils, I would think it would bottom out the spring before the buffer actually hit the back of the tube
Click to expand...

Works quite well, lots of info on the net about it. With the FX9 having a last round hold open it may not lock back. My other PCC’s don’t have a last round hold open so it’s really not a problem. I’m still going to try it anyways the next time I’m at the range.
 
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