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Thread: Can anyone help with this malfunction?

  1. #11
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    So if the OP puts a mag with a live round into the weapon and releases the bolt with the BOLT CATCH, it won't feed?

    edit:

    This happened only when hand cycling the action, never from a locked back bolt.
    My original post stands. He's monkeying around and fixin to get an ND. I see nothing to suggest a problem with the weapon.
    Last edited by markm; 01-18-13 at 09:03.
    "You people have too much time on your hands." - scottryan

  2. #12
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    Quote Originally Posted by markm View Post
    So if the OP puts a mag with a live round into the weapon and releases the bolt with the BOLT CATCH, it won't feed?
    It does, but it should feed when using the charging handle (even with the mags fully loaded). Some people (and guns) have problems with that. But the OP said he does it all the time on a different AR gun with no problems. So I think he knows what he is doing in that regard.

    This gun might work when live firing. But it's still not where it should be in my opinion.

    Joe Mamma
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  3. #13
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    Quote Originally Posted by Joe Mamma View Post
    the OP said he does it all the time on a different AR gun with no problems. So I think he knows what he is doing in that regard.
    The idea that he's doing this nonsense "all the time" doesn't suggest to me that he knows what he's doing.
    "You people have too much time on your hands." - scottryan

  4. #14
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    Since it looks like the OP covered almost all areas of a slow or under powered chambering by riding the CH I would address the buffer tube interior surface. Inspect the surface and see if any wear marks are visible due to the BCG rubbing. An easy way to rule this out is to loosen the buffer tube castle nut so the buffer tube can float. Now try to chamber the first round using your method described above.
    NRA Lifetime Member
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  5. #15
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    Almost every time i have had a similar problem it was magazine related. Use a known good mag with a few rounds loaded first and if that works try fully loaded. Also check the straightness of the ch since it seems to be the one variable involved in the feeding issue.
    " If i cannot be a good example Lord, let me be a terrible warning"

  6. #16
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    I'm wondering if this could be mag related as well. OP, does the gun d this with all the magazines or just a certain one?

    ETA: OP said it, I missed it

    This happened only when hand cycling the action, never from a locked back bolt. It happened on one horrendous GI 30 round, one new old stock British 30 round and one brand new Colt 20 round. Occasionally it would completely fail for pick up a round from the magazine but I believe that may have only been from the old GI 30 round (I could be mistaken).

    I suggest you get some dummy rounds. It's better to not tear up your ammo. It's also safer.
    Last edited by Shorts; 01-18-13 at 17:31. Reason: Answered my inquiry

  7. #17
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    Since he says that it feeds fine when using the bolt catch but not when using the charging handle, could there be something in the guide groves or a problem with the charging handle itself that is causing the bolt to slow down to the point that it wont feed? I would try cleaning out the recesses that the charging handle rides in and try it and then if that does not help I would try the charging handle from your other AR and see if that works, to see if this one is bent.

  8. #18
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    As much as it's going to not sit well with the OP, MarkM is right - the error most likely is user and magazine put together - at most a magazine with a worn mag catch slot is exacerbating it, but we need the OP to report if slingshotting the bolt magically fixes the problem.
    عندما تصبح الأسلحة محظورة, قد يملكون حظرون عندهم فقط
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  9. #19
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    Quote Originally Posted by TehLlama View Post
    As much as it's going to not sit well with the OP, MarkM is right - the error most likely is user and magazine put together - at most a magazine with a worn mag catch slot is exacerbating it, but we need the OP to report if slingshotting the bolt magically fixes the problem.
    OP has already stated that he tried 3 different mags, one being a new colt 20rd mag, all with same result.

  10. #20
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    Soooooo, have any of you had a moment when you realized you were probably an idiot? I did. I think markm is right and it sits just fine with me because I'm not really the sensitive type and it's free.

    The more I thought about it I realized that, while I knew that cycling rounds through the magazine is not the same as shooting, it is also not the same as chambering a round from the magazine to put the rifle into action, which is what I meant by "doing it all the time." I tried putting all the new parts back in and, from an empty chamber, charging with the charging handle. I then removed the magazine, ejected the round and repeated until I emptied the new Colt magazine. There were no issues. So it seems like the only problem may be with me. I'm pretty happy about that being the case because I was thinking I should probably just unload this thing and pick up a sweet LWRC.

    I am left with one question, why would cycling the action cause a negligent discharge?

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