WARNING-PMAG problem

Discussion in 'AR-15 Discussion' started by robocop10mm, Jul 2, 2009.

  1. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    I have discovered a problem with the PMAGs. A friend shoots carbine matches. He uses PMAGs for these matches and for duty carry. at a recent match he experienced a nasty type 3 stoppage that was traced to the magazine. The mag had been loaded via stripper clips with M-193 Ball. On the 2nd to the last round, FTF. As the picture shows the last round (first round into the mag, with its nose on the wrong side of the center rib. This caused the top round to be out of alignment enough to cause the FTF.

    When loading from a stripper clip the noses get pushed around at random angles. The first round in the mag obviously started on one side of the center rib but the follower pushed the body to the other side. The center rib prevented the round from correcting its self in the mag body. A GI mag does not have this center rib so the rounds will be corrected by the follower.

    The lesson is (IMHO) do not load PMAGs with stripper clips, Using a LULA or loading one round at a time should not cause this problem.
     

    Attached Files:

  2. Cnynrat

    Cnynrat New Member

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    Good to know .... thanks.
     

  3. JoshX3Magazine

    JoshX3Magazine New Member

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    A great observation and a good amount of investigating here to prove the point. Good stuff!

    This might save someone some trouble at the range, or, you never know, a life out on the street where it really counts.

    Thumbs up.

    Josh
     
  4. suprdave

    suprdave New Member

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    Thanks. I was about to order some stripper clips. Not now!
     
  5. matt g

    matt g New Member Supporter

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    Again, we see the foibles of plastic used in firearms.
     
  6. TXnorton

    TXnorton New Member

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    I have a good number of the PMAGS. My first attempt at loading with the stripper clips seemed very awkward as the stripper clip guide just did not fit cleanly and securely on the magazines. Fortunately, I also have a LULA and I use it exclusively when loading the PMAGS.

    TXnorton
     
  7. bamagunowner

    bamagunowner New Member

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    Robocop... can I ask you a dumb question, not directly related to your post?

    When looking at the .223 rounds in that magazine, it appears that they have some superfucial contamination (rust?) and some dents and scratches. It may just be the photo, but it sure looks like you've got some wear and tear on that ammo...

    What is the condition is the ammunition and what kind of handling/storage caused this condition?

    --Bama
     
  8. FTK87

    FTK87 New Member

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    I would suggest that he loads his own, but then I looked at the pic again and if I had brass that nasty it would go in the scrap pile.
     
  9. JiroZero713

    JiroZero713 Active Member

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    Yeah I think this is user error...my rounds go in just fine.


    But it's still a helpful hint and I'll probably go back to loading one at a time now.
     
  10. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    The top round has a slight tarnished/discolored spot near the mouth. This is a normal storage/handling blemish and does not effect the performance. The dents/gouges are from the bolt riding against that round when the upward pressure became insufficient to put the round in line to feed. Even nasty looking dings like these were ironed out when fired. These would not cause major problems.

    This is new M-193 ball ammo.
     
  11. XDMan

    XDMan New Member

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    I had the same problem with a pmag one time.I FILLED the pmag with 30rds useing stiper clips. The 14th rd was on an angle but all of the rds on top of it fed ok. I still think pmags are the best just dont use gi striper clips with them.
     
  12. slowryde45

    slowryde45 New Member

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    Wow...nice catch on that one Robo. I've used the P-mags, probably more than any of my other mags for some time now, and have never had an issue. But...I've always loaded with a Lula or singles by hand.

    And I didn't see any probs with the brass in the photo. They will get a few blemishes here and there just from normal handling, loading and storing. But I didn't see anything that would have caused any feed or use issues. But then again, to each his own...if someone needs their brass all shiney and spot free, go for it. But the ones in that pic looked fine, but that's just me ;)

    Slo
     
  13. spittinfire

    spittinfire New Member Supporter

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    Thanks for the information Robo. One day I will have an AR and I will keep this in mind.
     
  14. rjgnwdc

    rjgnwdc New Member Supporter

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    Ditto PMags

    That's all I'm using now, I haven't had my BushMaster long but long enough to appreciate the fact that the lips on the metal mags bend... just a little and they cause problems, I've had NO problems with PMag's and I have drop loaded Pmags on the concrete floor at the range with no problem not the case with the metal mags I bought from BushMaster and if the PMag did break it's obvious and you no don't load the mag trash it.
     
  15. RMTactical

    RMTactical New Member

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    Interesting. Thanks for the heads up.