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Thread: Any advantage to using USGI over PMAG?

  1. #31
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    Quote Originally Posted by tampam4 View Post
    this is very wrong on so many levels. PMAG's have proven themselves to be MUCH more reliable than just about any other mag out there, especially in the current conflict in the Middle East. I think it was in one of Magpul's advertisements, a Soldier or Marine more than likely saved a few lives in one firefight, because his gun was the only one that didn't jam at some point. He was using PMAG's everybody else were using USGI mags.
    You have peaked my interest as I have 1 PMAG and 30-40 USGI. i was under the impression that when PMAG's are under loaded long term storage it is required to keep the dust cover ...lid thing on it due to the chance the pressure of the rounds deforming the feed lip on the Mag??? if this is no longer the case PLEASE LET me know.

    BTW ...ALL of my USGI mags have the new Magpul Followers
    Last edited by DocMinster; 07-19-10 at 18:46.
    Those that "Live by the Sword"...are shot by those that don't use swords.

  2. #32
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    I'm not sure if you quoted the right person, but I will let more knowledgeable people answer the question rather than give out wrong information.

    Quote Originally Posted by DocMinster View Post
    You have peaked my interest as I have 1 PMAG and 30-40 USGI. i was under the impression that when PMAG's are under loaded long term storage it is required to keep the dust cover ...lid thing on it due to the chance the pressure of the rounds deforming the feed lip on the Mag??? if this is no longer the case LET me know.
    "Doc, can you check out this thing I got?"
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  3. #33
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    I use em both. Never a problem with either.

  4. #34
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    Quote Originally Posted by DavePAL84 View Post
    USGI's are cheaper for one (although I certainly wouldn't call PMags, 'expensive' by any means) which means you can buy more of them. Magazines are consumables and should be treated as such.

    USGI mags are just fine so long as you don't have any with black followers. Magpul followers are better than the green ones certainly but I haven't had too many problems to begin with that could be specifically tied to green followers.

    One of the big problems with USGI mags is that people generally don't toss them when they go bad. Get a doublefeed? Crush it and move on. During the AWB people kept their so-called, "high capacity" (read: standard capacity) magazines far after their service life was over. Magazines are so cheap now no there's no reason not to have a bundle.

    Some pouches have a hard time with PMags. Since they are slightly wider and because the baseplate is larger than the mag OD, occasionally, with some pouches, two mags will come out when you're only grabbing one. PMags have been out long enough that it isn't the case with all of them but you gotta try them out first.

    Some rifles will have a hard time closing an open-bolt on an inserted PMag (bolt release doesn't work, have to use the charging handle). One of my friends stopped using PMags once this started happening. This was with the series 2 PMags IIRC. (I've seen this with three rifles: my buddies LMT, a Colt 6920 and a POF (the latter two were from students in a class)).

    You can use the corner of a USGI mag to force back a stuck bolt. Of course, you can't do that with a USGI mag if you have a ranger plate installed.

    Won't drop free from all lowers, however, that issue is mostly fixed. If you have some old lowers it may be an issue. My suggestion would be to borrow some PMags and see.

    One of the good things about polymer magazines is that when they fail, you can see it (cause they crack or split down the spine). Feed lips on USGI's aren't so obvious when they are out of spec (usually the first sign is a double feed unless you check them all first).
    The green followers were what lead me to magpul followers b4 Pmags were invented. I had 3 occasions in one day at a Tricon course where I had a failure to feed because the tip was tilted downward with more than one mag. At the time I was even more ignorant than I am now, so I asked folks there about it. "That's typical", they say. Try Magpul followers that should help. It did.

    As far as dropping free, that's not an exclusive Pmag issue. I don't think any of the Instructors that teach stripping the mag out instead of assuming it will "drop free" started that because of Pmags.

    I have seen the mag pouch issue. Nothings perfect and thats nothing compared to something like reliability IMHO.


    The open bolt concern is a new one on me. Interesting. How many people do you know that have experienced this?


    By the way i'm not slamming GI mags I have plenty but I prefer Pmags. I think there are way more "pros"

  5. #35
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    Quote Originally Posted by tampam4 View Post
    I'm not sure if you quoted the right person, but I will let more knowledgeable people answer the question rather than give out wrong information.
    No... I did quote the correct person ... they said

    "PMAG's have proven themselves to be MUCH more reliable than just about any other mag out there"

    If one has to keep a dust cover thing because there is a possibility of the feed lip deforming ....that is a reliability issue in my eyes and prior to this post I was under the impression that is why they come with that ...dust cover.

    I like my single PMAG and would consider getting more IF this was not an issue as i have long lost that dust cover for my PMAG and do not keep it loaded and use it only for the range.

    ALL my USGI are loaded and have the updated Magpul followers to address the feed issues I had when I was AD.

    The last thing I would want would to load a pmag into my weapon that had been sitting loaded for several months with out their proprietary dust cover and ...BOING...all the rounds spring out.

    again nice mag I own ...I just would like to know if this issue has been addressed
    Last edited by DocMinster; 07-19-10 at 18:58.
    Those that "Live by the Sword"...are shot by those that don't use swords.

  6. #36
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    Isn't adding the dustcover increasing reliability after long-term storage loaded? In my very limited knowledge I am not aware of anything that eliminates deforming of feed lips, whether it be by magazine design itself or something external (dust cover) other than the Pmag. I also do not know if Pmag feed lips deform any faster than USGI's when not using the dustcover, I'm very interested to find that out.

    l
    Quote Originally Posted by DocMinster View Post
    No... I did quote the correct person ... they said

    "PMAG's have proven themselves to be MUCH more reliable than just about any other mag out there"

    If one has to keep a dust cover thing because there is a possibility of the feed lip deforming ....that is a reliability issue in my eyes and prior to this post I was under the impression that is why they come with that ...dust cover.

    I like my single PMAG and would consider getting more IF this was not an issue as i have long lost that dust cover for my PMAG and do not keep it loaded and use it only for the range.

    ALL my USGI are loaded and have the updated Magpul followers to address the feed issues I had when I was AD.

    The last thing I would want would to load a pmag into my weapon that had been sitting loaded for several months with out their proprietary dust cover and ...BOING...all the rounds spring out.

    again nice mag I own ...I just would like to know if this issue has been addressed
    "Doc, can you check out this thing I got?"
    -Every Marine, ever.

  7. #37
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    I see no reason to get rid of functioning magazines. They are a disposable item; if you want PMags buy them as you have to replace your current magazines. I have both right now and use Magpul followers in my GI mags and I'll use them until they no longer work.

  8. #38
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    Quote Originally Posted by DocMinster View Post
    No... I did quote the correct person ... they said

    "PMAG's have proven themselves to be MUCH more reliable than just about any other mag out there"

    If one has to keep a dust cover thing because there is a possibility of the feed lip deforming ....that is a reliability issue in my eyes and prior to this post I was under the impression that is why they come with that ...dust cover.

    I like my single PMAG and would consider getting more IF this was not an issue as i have long lost that dust cover for my PMAG and do not keep it loaded and use it only for the range.

    ALL my USGI are loaded and have the updated Magpul followers to address the feed issues I had when I was AD.

    The last thing I would want would to load a pmag into my weapon that had been sitting loaded for several months with out their proprietary dust cover and ...BOING...all the rounds spring out.

    again nice mag I own ...I just would like to know if this issue has been addressed
    I had 5 D&H, 5 DSA, and 20 Pmags fully loaded for over 3 years. 3 Pmags didn't have the dust covers. At the 2 year mark or there abouts, I test fired 2 of each, 2 of which were the uncovered Pmags... all functioned as advertised. A few months ago at the 3 year mark, I test fired 2 of each again, with different mags with the same outcome. No deformities in the feed lips or cracks of either mags were found.

    I am worried about the springs taking a set, being stored so long. I will slowly cycle through them and comparing the spring lengths to new, unused mags in the next few weeks. I'm curious to see if I need to replace them, if they prove to be too worn to cycle reliably.
    For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling

  9. #39
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    Quote Originally Posted by DocMinster View Post
    If one has to keep a dust cover thing because there is a possibility of the feed lip deforming ....that is a reliability issue in my eyes and prior to this post I was under the impression that is why they come with that ...dust cover.
    Feed lip creep is a not actually an issue with PMAGs.

    http://m4carbine.net/showthread.php?t=32837
    http://m4carbine.net/showpost.php?p=388919&postcount=8

    Quote Originally Posted by NickB View Post
    If your PMAG feedlips spread/creep, give me a call and I'll replace them all with new ones. As far as I'm concerned, that's a small price to pay for evidence of the first creeping PMAG feedlips to date.

  10. #40
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    After thinking about it for quite a while, the only think I'd do with my USGI mags would be to swap them 1-1 for some Pmags, if I could even find someone who wanted to (pre-ban or not).

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