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Thread: Adams Arms/VLTOR A5 fail to eject

  1. #61
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    Another update...

    I opened the buffer back up and replaced one more tungsten weight with a steel one, bringing it down to 4.5oz with 1 tungsten and 3 steel weights. Took it to the range with the last 126 rounds of independence XM193 I had left. Loaded 25 in each type of magazine I had.

    First up was a non-window M3 PMAG. The whole mag fed, fired, ejected, and fed again like clockwork.
    Next up was a Lancer L5AWM. The first 2 fired, ejected, and fed, but after the 2nd round, the 3rd round stayed in the magazine. I kept trying, but the next 5 or so rounds would fire and eject, but the next round would never get picked up.
    Then I tried the same with a window M3 PMAG, then with a USGI mag, with basically the same results. Occasionally I was have 2 or maybe even 3 fire back to back, but nothing consistant. Then there was the rare round getting jammed at an angle as it was being fed into the chamber.
    I emptied about 10 rounds from one mag and loaded them into the original PMAG that fired all 25 rounds, but this time I had the same problem I was having with all the other mags.

    So what do yall think?

    1) Was it just a fluke that the first mag functioned flawlessly the first time?
    2) Could the problem have something to do with the heat from firing the first 25 rounds? (I didn't fire them particularly fast or anything. In fact, took a short break half way to walk down range and back)
    3) Is Independence XM193 really so weak that it still needs an even lighter buffer while Lake City M855 worked fine with the 5.3oz buffer?

    Most likely from here I'm going to have to order a lighter buffer from VLTOR (or at least one of those special steel weights with the spring attached).

  2. #62
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    First I have to say that your buffer weight may still be to heavy and you still have not tried the recommended weight of a standard "H" or Carbine buffer, Second I have never seen IMI 5.56 being "Weak" and it usually runs a little hotter then standard 5.56

    That said I still think you are having a issue between the A/A BCG and the VLTOR buffer tube, that scoring is abnormal for the small number of rounds fired and I would once again recommend shooting your upper on another standard AR lower and see what the results are.

    So in closing I have to add that if your not going to follow the past suggestions that were already offered then the chances of correcting your current issue is slim. Rigid thinking is not the best route in working out the problems with your AR and just because you think it should work does not mean that it will.
    We are all inclined to judge ourselves by our ideals; others, by their acts.

  3. #63
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    I think one of two things should happen.

    1. Follow the previous recommendations.

    2. Get rid of the worthless piston upper and get a direct impingement one that will work.

    For all you know there may actually be something wrong with the upper itself.



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  4. #64
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    Quote Originally Posted by Iraqgunz View Post
    I think one of two things should happen.

    1. Follow the previous recommendations.

    2. Get rid of the worthless piston upper and get a direct impingement one that will work.

    For all you know there may actually be something wrong with the upper itself.
    I have to admit.....that part in bold sounds familiar.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  5. #65
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    Quote Originally Posted by Iraqgunz View Post
    I think one of two things should happen.

    1. Follow the previous recommendations.

    2. Get rid of the worthless piston upper and get a direct impingement one that will work.

    For all you know there may actually be something wrong with the upper itself.
    "Worthless" maybe a bit over the top when assessing the A/A piston design as there have been many owners post positive comments and reported no issues what so ever with a A/A piston upper on the net.

    That said I can speak from experience that my A/A mid length piston upper with a PSA lower, Colt mil-spec buffer tube and a 'H' or Carbine buffer has been just as reliable as my DI guns over the past few years. I don't have my log book handy but I think I have 4800rds fired without issue and while the round count may not be heavy compared to my DI guns the piston design has worked well for me.
    Last edited by PA PATRIOT; 09-19-13 at 19:56.
    We are all inclined to judge ourselves by our ideals; others, by their acts.

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