Good day! I recently purchased a PSA PX-9 Gen4. I am having some serious FTE issues. Everything on this firearm is still stock. I have tried two different brands of magazine (ProMag 32-round Glock style and the Magpul 17-round Pmag that came w the PX-9). I have tried 3 different boxes of ammunition (Winchester 115gr, Federal 115gr FMJ, Federal 124gr FMJ). The BCG is oiled.
But I cannot get more than 10 rounds w/out a FTE. I’ve included pictures of the malfunction. You can imagine the shell casings come out of this malfunction bent and creased to hell so I won’t include photos of that. The last photo shows my BGC over my ejector hook. I’ve read the spacing between the two can cause issues and I see I have some significant spacing in my model but would like experienced outside opinions.
All constructive advice appreciated, I’m still learning!
On a couple of malfunctions, I noticed the casing got jammed between the ejector and the BCG. Like SERIOUSLY jammed. After removing the mag and dropping the round from the chamber by gravity, I positioned my firearm upright (barrel pointing to the sky) and tried to pull the charging handle and it would not budge. After MUCH manipulation of the charging handle/BCG and literally wedging the spent casing with a stiff object (my house keys were all I had on hand unfortunately), it would drop out. This happened 2 or 3 times, set apart from the many other FTE that cleared with a simple brushing away of the spent and stuck casing.
The first photo shows the malfunction from outside the ejection port, the second shows it from underneath, through the magwell where it clearly appears to be firmly jammed between the ejector and the BCG. The last photo shows what the casing looks like when it finally dislodges. It seems obvious the deep crease was created by the that gap between the ejector and BCG, but again, I am looking for experienced opinions before I go sending this thing off for work or replacing parts.
1st, get rid of promag mags. They are junk. Try an actual glock mag in it. Also, just by chance are you manipulating the mag (holding at the magwell) by accident when firing? That can change the angle and make malfunctions happen.
Man you are NOT lying. Little side story since we’re commiserating: My first trip to the range w the PX-9, I was getting a TON of FTF w this mag. I got it home and upon further inspection, the steel lining had split from the plastic shell
After testing the mag, I go to remove it and it’s absolutely STUCK. Shaking and lightly jerking it (hold the laughter) I finally yank it out (HOLD the laughter), I inspect it further to find the front of the magazine is now fracturing and likely caught itself on the magwell/release
MAYBE it came out of the bag like that or MAYBE the <50 rounds I put through it at the range really shock-stressed it.
Either way, I stopped using that mag and use the spare Promag I bought that has no fracturing and the Magpul that came with the firearm and “miraculously” haven’t gotten a single FTF since.
The quality is unfortunate because I love the way the steel lining looks against the black shell but I do NOT trust the QC on these mags so thanks for the second opinion I will look into getting some Glock mags!
In terms of my form, I watched back some range footage and my hands are well forward of the magwell when firing.
So i would suggest a different buffer. That is indeed a 9mm buffer but a heavier one (i use the KAK 8oz) really might smooth things out for you. I also prefer an extended one (with the thicker head on it) instead of using the penny/spacer trick to prevent overtravel of the bolt.
Orange stuff on the spring is probably one of three things, in order of likelihood - (#1) particulate from the buffer tip wearing off and making itself comfortable (breaking in), (#2) possible orange paint on the spring to indicate the type/strength (SpringCo sells springs marked with different color paint, for example), or (#3) someone at the PSA assembly line was eating Doritos, Cheetos, or Cheezy Poofs while working.
Unless you are brave enough to taste it, I think we’ll go with #1 and say it’s not a big deal unless you start getting big chunks of orange plastic back in the upper receiver where it could potentially jam something.
just feels like “thump thump thump” in the tube and a heavier buffer definitely helps that but the longer ones help with cycling. personally i would just try a different buffer and ets magazine then if it still has that issue send it back.. i love psa pcc but always mention i use an enhanced kak buffer in all of them now: KAK Industry's K-SPEC Enhanced Buffer: Redefining Recoil Dampening
Fair enough! I did notice something just like it started coming out of the holes around the ejector hook screws when loosened them once. I was confused on what it was then and that was BEFORE I took the buffer tube apart and saw the residue on the spring. I’m wondering if they’re connected? I’ll keep an eye on it over time, thanks for the heads up!
I have built a number of AR9s. On all of mine I had use a heavier buffer. Get the longer version. KAK makes what you need. My stock PSA needed these mods.
