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Thread: Firing issue I had today

  1. #41
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    Just an update. Had no feeding or misfire issues today. The only thing that's different about the gun is froglube.

  2. #42
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    I find it odd that a Colt gun would be lube sensitive, I think the lube is just a red herring. Is it possible something was just dragging on the FP inside the bolt, or something gunked underneath the head of the FP inside the channel in the BCG?

    I would seek to recreate your issue as repeatable as possible, so that you can diagnose it accurately. Otherwise, you don't REALLY know if your firearm is reliable, and thats a shit feeling to have.

    Without marks on the primer from even chambering, let alone the firing sequence, I'm inclined to think something was binding the FP and its not a FCG issue. Could a FP be ever so slightly bent?
    Last edited by RadioActivity; 03-05-13 at 18:47.

  3. #43
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    I'm not sure how I can recreate it or even having this issue again.

  4. #44
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    Quote Originally Posted by ClosetCaseNerd View Post
    I find it odd that a Colt gun would be lube sensitive, I think the lube is just a red herring. Is it possible something was just dragging on the FP inside the bolt, or something gunked underneath the head of the FP inside the channel in the BCG?

    I would seek to recreate your issue as repeatable as possible, so that you can diagnose it accurately. Otherwise, you don't REALLY know if your firearm is reliable, and thats a shit feeling to have.

    Without marks on the primer from even chambering, let alone the firing sequence, I'm inclined to think something was binding the FP and its not a FCG issue. Could a FP be ever so slightly bent?
    All ARs need lube, even Colts.

    The lube needs to be in the right spots too.

    The cam pin and gas key sides seem to be the most important.

    Taking the BCG down allows inspection during cleaning.

    This is important PM to ensure reliable long term operation.
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  5. #45
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    Rings

    Quote Originally Posted by AR Newby AZ View Post
    I don't see how it could be the gas rings. I don't make them perfectly staggered but enough to where they're not lined up in the same position.
    Ever Rering pistons on a high compression race engin. Packing

  6. #46
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    I've seen Colts where the bolt can hang in the carrier out of the box. Tight fit at first. IME if the round was chambered there would be a light mark from the firing pin.

  7. #47
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    I'll guarantee it was nothing more than an anomaly. Lube the weapon and then shoot it with good ammo.



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  8. #48
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    Quote Originally Posted by Packing a 45 View Post
    Ever Rering pistons on a high compression race engin. Packing
    If you are referring to the stupid stagger the rings myth..stop. It doesn't matter on an AR-15. First, in a worse case scenario an M-16 is only running at 700-950 rpm, not the 7000-9500 RPM of a race engine. Second, the guns will run on one ring. Not for long, but it will run.

  9. #49
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    Quote Originally Posted by Packing a 45 View Post
    Ever Rering pistons on a high compression race engin. Packing
    You can't compare that to an AR. I don't want to get in the details and off track as to why but they're TOTALLY different applications.

  10. #50
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    Quote Originally Posted by AR Newby AZ View Post
    No marks on the primer.
    This means that the firing pin didnt move forward enough to tap the primer. Each time you chamber a round the firing pin moves just enough to lightly ding the primer. Free floating pin and all. If there are no marks at all on the primer then somewhere the FP is not being allowed to go forward and is binding somewhere. Possibly debris inside the firing pin hole. Cleaning may have gotten the debris out which is why it fired correctly afterwards.
    Last edited by AFshirt; 03-07-13 at 06:23.

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