Glock Pmag causing FTE?

[Lincoln7]

I have a Glock 17 (gen 2) and a Glock 19 (gen 3) that have been extremely reliable. The 17 has been nearly trouble free for the last 2000+ rounds (one stovepipe malfunction). The 19 has been good for ~450 rounds.

I picked up a (latest version) Magpul Glock Pmag and I experienced multiple failure to extract malfunctions in both of my Glocks. I was shooting a mixture of brass, steel, and aluminum cased ammunition but I believe all malfunctions were with Blazer Aluminum. A large percentage of the ammunition through these Glocks have been Blazer Al with no issues. I experienced no malfunctions with the factory magazines this day.

Has anyone experienced, seen, or heard of the new Pmag, or any mag, causing FTExtract malfs? I believe bad magazines rarely to be causing this type of malfunctions.

[IOwnAGun]

First batch, or post recall pmags?

[Renegade]

Been there, seen that.

Everybody knows PMAGS never work for first few generations till they get the bugs out. Seen it in 556, 762, and Glock.

At least they own up.

https://www.facebook.com/magpul/posts/958732774139072

OK we screwed up.
After initial release of the Glock PMAG 17 GL9 a few days ago we started seeing random issues of failure to feed with the new magazine in other Glock models, primarily the Glock 19 and 26. Of all the challenges of building a Glock magazine with a single new composite, issues like drop free, impact strength and feed lip retention were foremost on our mind. The failure to feed came as a bit of a surprise to us and we immediately headed out to the range to investigate.
In short order we found the problem. Without getting into technical details, some small, but critical geometry changes did not make it into the initial production molds. We should have caught this but no failures showed up on our factory guns during live fire testing and flaws in our internal processes of checks/balances did not flag the oversight as it should.
So as I said before, we screwed up and here is what we are going to do about it.
Molds are being updated with the correct geometry as we speak and a replacement magazine body with the correct geometry should be available by May 4th, 2015. These will be date coded 5/15 or later and will replace any magazine bodies in service of earlier manufacture. Just use your existing spring, follower, and floor plate with the new body.
-If you purchased your magazines direct from Magpul, Brownells or Midway, you do not need to do anything, replacement magazine bodies for the magazines ordered (1 for 1) will be shipped to you automatically.
-If you purchased your magazines from a gun store, replacement bodies will be sent out to the store in question for you to pick up.
-If neither of the above works for you then Magpul customer service will handle the replacement directly.
In short, we are updating ALL of the affected magazines released as quick as we possibly can.
Richard Fitzpatrick
President/CEO -Magpul Industries Corp

[Lincoln7]

First batch, or post recall pmags?

Latest version/new body/date code verified

[Lincoln7]

Been there, seen that.

Everybody knows PMAGS never work for first few generations till they get the bugs out. Seen it in 556, 762, and Glock.

At least they own up.

https://www.facebook.com/magpul/posts/958732774139072

OK we screwed up.
After initial release of the Glock PMAG 17 GL9 a few days ago we started seeing random issues of failure to feed with the new magazine in other Glock models, primarily the Glock 19 and 26. Of all the challenges of building a Glock magazine with a single new composite, issues like drop free, impact strength and feed lip retention were foremost on our mind. The failure to feed came as a bit of a surprise to us and we immediately headed out to the range to investigate.
In short order we found the problem. Without getting into technical details, some small, but critical geometry changes did not make it into the initial production molds. We should have caught this but no failures showed up on our factory guns during live fire testing and flaws in our internal processes of checks/balances did not flag the oversight as it should.
So as I said before, we screwed up and here is what we are going to do about it.
Molds are being updated with the correct geometry as we speak and a replacement magazine body with the correct geometry should be available by May 4th, 2015. These will be date coded 5/15 or later and will replace any magazine bodies in service of earlier manufacture. Just use your existing spring, follower, and floor plate with the new body.
-If you purchased your magazines direct from Magpul, Brownells or Midway, you do not need to do anything, replacement magazine bodies for the magazines ordered (1 for 1) will be shipped to you automatically.
-If you purchased your magazines from a gun store, replacement bodies will be sent out to the store in question for you to pick up.
-If neither of the above works for you then Magpul customer service will handle the replacement directly.
In short, we are updating ALL of the affected magazines released as quick as we possibly can.
Richard Fitzpatrick
President/CEO -Magpul Industries Corp

The issue of the first gen bodies was only evident in the 19 and 26 models and it was failure to feed issues. I was experiencing FTExtract malfs in my 19 AND 17.

[MegademiC]

Did you clean/lube and retry? Make sure you clean out the extractor, where it sits in the frame.

Also, did you try a factory mag and did the problem go away?

I'm not saying it's not causing it, but I can't imagine, at this time, how a mag could cause an fte.

[SPQR476]

Hard to attribute FTExtract to a magazine issue--I'm trying to think how it could occur... There was one individual who had last round FTEject with our mag, but not Glock, and that was likely caused by a combination of a load that barely cycled the gun and "broken in" glock mags vs new PMAGs and differences in the spring rates and follower wear.

FTExtract would be hard to even figure out how the mag could be a contributing factor. We did test with Blazer aluminum as one of the ammunition types. It doesn't like aluminum case ammo when dirty, same as steel, but runs fine with brass, always, or if you want to run the steel and aluminum case, you just may have to make sure mags are cleaned once in a while.

Is ejection positive with the ammunition normally? Empties flying 3-5 feet?

[Lincoln7]

Hard to attribute FTExtract to a magazine issue--I'm trying to think how it could occur...

Some empty/fired cases were found to be partially extracted from the chamber with a live round attempting to be fed into it. Is it possible the magazine is sitting too high and upon extraction the empty casing is getting pulled rearward into the magazine/next round in magazine?

Is ejection positive with the ammunition normally? Empties flying 3-5 feet?

Yes, positive extraction. Empties travel nicely, pretty consistently. No brass to face.

I plan to pick up a couple more Glock Pmags and see if it is just a bad mag or if my Glocks don't like them. No issues with other ammo either so I feel like the Blazer Aluminum was a contributor.

[Lincoln7]

New Glock Pmag ordered. I will report back results when I get them. Post any other ideas if you think of something.

[brickboy240]

I have found that alloy cased Blazer ammo to cause failures like that in several of my pistols that never have those stoppages with brass or even steel cased ammo.

My SIG P228, Hi-Power and Colt Combat Commander all have problems with the Blazer alloy cased ammo. They are normally VERY consistent feeders with brass ammo of all flavors.

I was told by a gunsmith that I trust that the alloy cased are lighter than the brass or steel ones and the lighter cases might throw off the timing of the slide cycle on some auto pistols. Makes sense to me.

That alloy cased ammo...in several calibers...has caused stoppages in guns I never have problems with, otherwise. Therefore...I pretty much try to avoid that stuff. Besides, it is also extremely filthy ammo to begin with.