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Thread: Issue with rifle surfaced during training course, report

  1. #61
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    I'll put the bolt catch back in and re-try when I get home.

    I will also get on the horn with Noveske tomorrow and see what they say. Thanks for all the help guys.

  2. #62
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    Lower

    If the issue is with the lower being out of spec, then when a round fails to feed what does it do after the rear take down pin is pulled? Does the round feed then?

    Scott
    2 Chronicles 7:14

    The Citadel, Charleston South Carolina 1842 - 1995 RIP

  3. #63
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    Sorry, I don't understand what your saying...

  4. #64
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    i think he's suggesting you allow it to malfunction, and while malf'd, pull the takedown pin and see if that drops the bolt.

    seems to me like you'd just bind the carrier up in the receiver extension- but i've never tried it.. so maybe he knows something i dont know.

  5. #65
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    Ok. Thanks.

    I have a call into Noveske right now, waiting on Joel to call me back.

  6. #66
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    Spoke to Joel with Noveske. He stated it sounded like a out of spec LPK causing the hammer to drag on the bottom of the BCG robbing the BCG of enough inertia to feed the top round. He gave me a test to try. I should clean the face of the hammer, mark up with sharpie, cycle the action a few times and see if there are rub marks on the hammer. He also said it may very well be an out of spec lower receiver causing the above hammer drag. He recommened that I use a H1 buffer which I belive I already have in there and to lightly lube the buffer spring. he also said to ensure that the spring was in-spec.

    I'm at work now I'll try the test when I get home. Joel was a nice guy and easy to deal with. He made it clear that if there is an issue with the lower itself, they would take care of it.
    Last edited by Serpico1985; 10-04-10 at 15:24. Reason: add info

  7. #67
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    How high is your cocked hammer protruding from the lower?

    It's normal for the hammer to rub on the bottom of the carrier during cycling as the carrier is what causes the hammer to be cocked.

    However, if the hammer or lower is out of spec, the hammer can cause excessive drag and that is a problem.
    Sometimes it's only a little bit of metal that needs to be relieved to fix the problem.

    The picture below shows how much was required in one case:

    Randall Rausch
    AR15 Barrel Guru
    California Precision Rifle Club founding member

  8. #68
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    I have calipers and will take measurements when I get home as well as the marker test. I understand what your saying as far as the BCG must contact the hammer to cock it. Thanks for the info on relieving the hammer somewhat. I did not know that. I’ll try up post an update on what I find tonight.

  9. #69
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    If you are replacing the buffer spring, why not use an eight dollar Colt one from SAW? I wouldn't switch from one unknown to another, when you are trying to nail down a problem. Best wishes: I feel confident the Noveske will be a winner once you iron out the issues.
    "Men speak of natural rights, but I challenge any one to show where in nature any rights existed or were recognized until there was established for their declaration and protection a duly promulgated body of corresponding laws." --Calvin Coolidge

  10. #70
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    Roger that cabinero, If I need a new spring I guess I can't go wrong with a known quality maker like colt.


    I did the bolt rub test when I got home. I cycled the action about 10 times, the hammer never dropped....





    Here's my next question. If the above rubb marks indicate that the hammer is rubbing on the BCG when cycling, which is not a good thing, how do I determine if it's an out of spec hammer or out of spec pin hole locations?

    I have digital calipers, I have a set of gage pins from .061" - .250" so I can take some pretty exact measurements if need be. I guess the easiest answer would be to use a known in spec hammer and see if it's still rubbing, is so it must be the lower. I wasn't sure if someone had measurements for the pin hole locations on the lower relative to the top of the receiver.

    The trigger pull on this bad boy is pretty horrible, I would easily say in the 10lb range so replacing it would be my pleasure.

    Thanks again for all the help guys, I really appreciate it.

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