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Thread: Twenty-Round Magazine Followers

  1. #11
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    Quote Originally Posted by Scoby View Post
    I'll have to take your word on that. I've got zero experience with the USGI 20s.

    Why do you think the anti-tilt followers would lessen the reliability of the 20s when they have, IMO, improved the reliability of the 30s?
    I can't quantify the reliability of the USGI 20... but years on consensus on the AR forums seems to point to it running more reliably than the 30... the 30 is no dog either... My thought is the feedlip design without the rear corners is better than the 30's feed lip design.

    Anti tilt followers in the standard USGI mag would change the way it functions. Not sure what Pmag has going inside, but I'd bet it's a different internal design.
    "You people have too much time on your hands." - scottryan

  2. #12
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    Quote Originally Posted by Scoby View Post
    I'm not really familiar with USGI 20 round mags. I have a number of 30s but no 20s.

    Have you ever seen a 20rd PMag? They have a straight contour just like a USGI and have anti-tilt followers.

    Anti-tilt followers are not a gimmick.
    PMag 20s are known for having issues with the follower- specifically, the bolt failing to lock back automatically. In addition, they are not USGI and have different internal dimensions. (They may actually have a slight curve internally... I can't remember.) In any case, they're irrelevant in this discussion since we're talking USGI.

    Anti-tilt followers are near-necessity (if not necessity) in a USGI30.... In a USGI20, though, they are a gimmick. USGI20s with stock followers are about as drop-dead reliable as magazines get.

  3. #13
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    Quote Originally Posted by lamarbrog View Post
    For real, have any of you guys ever even seen a 20 round magazine?
    In fact, the follower MUST tilt in a 20 round magazine to some extent since the tube is straight and the case has a taper.
    +1

    The straight tube 20 round USGI are to be run w/o a anti-tilt follower. The 20 round Aluminum mag with a slight bend in them (D&H, DSG ARMS) should use a anti-tilt follower.

    OP- the black aluminum follower will work like a champ as designed in the straight mags. Running the "chopped" 30 round bent ones, run a anti-tilt follower.

    DD

  4. #14
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    Quote Originally Posted by Scoby View Post
    I'll have to take your word on that. I've got zero experience with the USGI 20s.

    Why do you think the anti-tilt followers would lessen the reliability of the 20s when they have, IMO, improved the reliability of the 30s?
    A USGI20 requires that the follower tilt in order to feed reliably- if it didn't tilt to some degree, the cartridges would nose-dive. The follower tilts under spring tension, pushing up on the front of the cartridge stack so the cartridges feed reliably.

    An anti-tilt follower in a USGI20 is at best a gimmick, and at worst will hinder proper function.

    Edit to add: The reason the feed lip design is different on USGI20s compared to USGI30s is to strengthen the feed lips. The increased pressure on the feed lips of a USGI30 would cause excessive feed lip spread more rapidly if they had a USGI20 feed lip design. This is evident in the fact that when feed lips crack on a USGI 30 after being loaded for long amounts of time at full capacity (rare, but it does happen) they crack at the rear, where the material would be missing in a USGI20. That extra aluminum is holding the lips down.
    Last edited by lamarbrog; 09-19-11 at 12:45.

  5. #15
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    Interesting.

    I have a buddy that offered to give me three 20 rounders the other week. I delclined at the time as I really don't need them. I'll see if he's still got them. If he does I'll see how a anti-tilt will perform in one. Just to satisfy my own curosity nothing more.

    Yes, I've heard people talk about having issues with the 20rd PMags not locking back. I have a dozen that I use alot and have never had a problem with one.
    Scoby


    “Laws that forbid the carrying of arms disarm only those who are neither inclined nor determined to commit crimes. Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.”Thomas Jefferson, quoting 18th century criminologist Cesare Beccaria in “On Crimes and Punishment”, 1764

  6. #16
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    No problem with my 20 rd PMAGS either.

  7. #17
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    I only have one PMag20 for my collection, and it has never given me an issue- but the numerous reports of problems can't be denied.

    You won't fit a MagPul or similar follower into a USGI 20. The way the floor plate locks on won't allow it. A green or black USGI follower will fit in and should function (if I remember correctly) but you will have restricted capacity. This was years ago I played around with this, but I think you get somewhere around 15 or 16 rounds only.

    I'd definitely take the free magazines- USGI20s are awesome magazines. Really reliable, and compact.
    Last edited by lamarbrog; 09-19-11 at 14:12.

  8. #18
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    Thanks, all - I appreciate the education. I've placed my order - probably my "first" order - but I doubt I'll ever equal the amounts that some of you have. Again, thank you.

  9. #19
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    Quote Originally Posted by Scoby View Post
    Interesting.
    If he does I'll see how a anti-tilt will perform in one. Just to satisfy my own curosity nothing more.
    They work just fine, but if you do not shorten the "legs" then you will convert them to 17 round mags.

  10. #20
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    No reason to replace anything on 20 rounders unless they malfunction. I have a bunch of original USGI 20 rounders that were "liberated" from an Air Force conex overseas. They have extremely worn finishes, alloy followers. I can't imagine how old they are. They all work 100%, I have never even bothered to dis-assemble any.
    SF

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