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Not all PMags are created equal!

Discussion in 'Gear & Accessories' started by Kruejl, Aug 16, 2015.

  1. Kruejl

    Kruejl Hillsboro Moderator of the Coriolis effect Staff Member Gold Supporter Silver Supporter

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    So I have a pistol lower built and was trying out various mags for drop. ALL my GI Metal mags drop free. MOST of my PMags do. I have 3 of the 20 I own that don't drop free. I even have two windowed gen2's that 1 drops and one doesn't. Anyone else notice this?
     
  2. Kruejl

    Kruejl Hillsboro Moderator of the Coriolis effect Staff Member Gold Supporter Silver Supporter

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    And FYI, its and Anderson lower. Yes, a budget lower. But maybe my "budget" lower has tighter tolerances than some others? Obviously PMags have some variance to them.
     
  3. Caveman Jim

    Caveman Jim West of Oly Springer Slayer 2016 Volunteer

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    I also did a drop test when I got my AR a while ago 23 out of 25 USGI mags dropped & two didn't, still kept the two klingons. I didn't have any Pmags at the time.
    Last year I traded for 4) 20 round Pmags and two didn't make the cut so I traded them for two 30 rounders of which one does not drop free but kept it for range duty, not a huge fan of Pmags but did buy 2 40 rounders for SnG's.... :eek::eek::eek:
    I am old school and love my USGI mags!!!;)
     
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  4. Stomper

    Stomper Oceania Rising White Is The New Brown Silver Supporter

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    USGI/STANAG mags are all I use. I've never been a (huge) fan of plastic mags... ever.
     
  5. misterarman

    misterarman Vancouver,Wa. USA Silver Supporter Silver Supporter

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    You mean they make a plastic mag for ARs?
    Only been shooting metal for 38 years. Since the Pmags got here not sure how I managed to make the metal ones work. Clean them once in a while and it's amazing. Oh, by the way anybody got any metal ones they want to sell cheap cause the pmags are better?
     
  6. jbett98

    jbett98 NW Oregon Bronze Supporter Bronze Supporter

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    Is your mag release threaded flush with the mag release button?
    If it's not, rotate it one more turn and then try dropping the mags in question.
     
  7. Joe13

    Joe13 NW of Vancouver Opinionated & Blunt Bronze Supporter 2015 Volunteer 2016 Volunteer

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    Sounds like a little sandpaper would help.
     
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  8. Liberty97045

    Liberty97045 Oregon City Well-Known Member

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    attachment.php?attachmentid=444728&d=1360346188.jpg
     
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  9. Caveman Jim

    Caveman Jim West of Oly Springer Slayer 2016 Volunteer

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    I'd think that if 95+% dropped it ain't no adjustment problem... but then I'm not an AR armorer neither.o_O
     
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  10. .45's and .38's

    .45's and .38's Happy Valley OR Well-Known Member

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    Sometimes you get what you get with anderson.

    I have had the same problem, go out & buy a cheap lower, then your hoard of mags wont drop free. I'd get a new lower, not worth sandpapering anything....especially if P mags wont drop
     
  11. ZA_Survivalist

    ZA_Survivalist Oregon AK's all day.

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    Im the same way, I dropped a few Pmags (and others) that broke the feed lip or cracked down the middle.. From that point on I swore Id replace all but a few with USGI mags, ones I could leave loaded and drop and still be gtg. You can call me, Private butterfingers.. Wait.. That sounds bad..
     
  12. Kruejl

    Kruejl Hillsboro Moderator of the Coriolis effect Staff Member Gold Supporter Silver Supporter

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    Its not an adjustment issue. My mag catch is installed properly. Its a variance in PMags. And I'm not swapping to a different lower as I don't have another lower handy. I think Anderson may have a tighter tolerance than some others. Its just funny how two identical PMags can has such a variance.
     
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  13. Lance Jacobs

    Lance Jacobs South Willamette Valley Oregon Well-Known Member

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    Can anyone else duplicate this problem with these 3 mags in another AR-15?? Or is your rifle the only one that you have tried them in?

    .
     
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  14. Joe13

    Joe13 NW of Vancouver Opinionated & Blunt Bronze Supporter 2015 Volunteer 2016 Volunteer

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    Train so that you flip the rifle upside down, just hold onto the Pmag, hit the mag release so the weight of the rifle drops and then flip it back over and insert a new mag.;)

    You will be the talk of the range every time you go:p
     
  15. etrain16

    etrain16 Oregon Bronze Supporter Bronze Supporter

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    That sounds like a great idea for a YouTube video - someone needs to do that :)
     
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  16. jbett98

    jbett98 NW Oregon Bronze Supporter Bronze Supporter

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    Doesn't James Yeager teach that method?
     
  17. Ben Beckerich

    Ben Beckerich NW Oregon Bronze Supporter Bronze Supporter

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    I've had a number of lowers and a number of PMags... some lowers drop all Pmags cleanly, some lowers drop none cleanly, some don't drop GI mags either.... so there's a lot of variables. The newer Pmags are all supposed to drop free from in-spec lowers... but few lowers these days are held to really tight tolerances (keep in mind "tight tolerance" means tightly held to the spec, not a "tight" magwell). PMags are designed to be a little tighter in the magwell so they don't rock around and are more reliable.... remember in OSUT when they used to teach not to use the magazine as a monopod or a VFG, because it could make the weapon misfire? That's not just myth- GI mags, at least old ones, wiggle around inside the magwell so much, you can actually cause a failure to feed if you put enough pressure on the front. Pretty much impossible to do with Pmags.
     
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  18. Lance Jacobs

    Lance Jacobs South Willamette Valley Oregon Well-Known Member

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    That was my point too. As long as his testing only involves one single lower, then he has not eliminated it as being a variable.

    .
     
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  19. Kruejl

    Kruejl Hillsboro Moderator of the Coriolis effect Staff Member Gold Supporter Silver Supporter

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    Oh, I'm SURE its the lower. No doubt. BUT....the lower magwell doesn't change size from mag to mag. So my point is that PMags can vary in dimensions. Even two identical generation mags.
     
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  20. mkwerx

    mkwerx Forest Grove, OR Well-Known Member

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    Have you tried the "Magpul flip" ? :D
     
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