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Thread: one oclock ejection

  1. #21
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    Seems pretty simple to me.

  2. #22
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    Quote Originally Posted by Iraqgunz View Post
    The single most devastating thing to hit the AR family in 40 years= OVERTHINKING THINGS.
    This, OP. If the weapon functions normally, please leave it alone.

    That is, of course, you don't have really sensitive brass that is easily offended by where it lands.
    Last edited by nineteenkilo; 01-19-12 at 11:00.

  3. #23
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    I would get a Spikes buffer, two O rings, KNS pins, and Nano lube!!!

    Then report back!!
    "You people have too much time on your hands." - scottryan

  4. #24
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    Quote Originally Posted by GrumpyM4 View Post
    It appears that I remain one of the few who still understand that ejection pattern holds valuable information.

    Every machine has expected performance standards given optimum operating conditions.

    Ejection pattern is one of those standards that is indicitave of the performance of the machine. A change in ejection pattern is indicitave of a change in the operating conditions of the machine, a change in it's power source, or the conditions of en environment outside the machine that effect its operation.

    That being said, the optimal ejection pattern of an AR with a brass deflector is to the 3 o'clock position. This is assuming that all parts are new, within spec, and unfouled.

    When the ejection pattern changes, there are always different aspects of the machine that can affect its operating perameters or mimic other aspects.

    In the case described in the OP, the brass ejecting forward like that is usually indicitive of an over gassed gun. Meaning that bolt speed is so fast that the brass is so far back in the receiver by the time that it is leaving the ejection port that it is hitting the rear of the ejection port and and deflecting forward instead of straight out the side as it should.

    Excessive bolt speed can be mimicked by a weak ejector spring or some sort of fouling of the ejector that prevents the ejecting brass from exiting the ejection port when it's supposed to. It can also be mimicked by a worn action spring (buffer spring)

    My question is if the rifle has been behaving like this for it's entire round count or if this is new behavior.

    If it's new behavior, i'd check your action spring since you've changed out the bolt and carrier and still experience the same behavior. Measure it and check length per the TM, replace as necessary.
    This is my experience as well. When I fire hotter ammunition, ejection moves forward. Weaker ammunition,ejection moves rearward.

    Fouled ejector (deformed bolt shaving brass seized it in the tunnel) caused my ejection pattern to move the same direction as weaker ammunition--about 3-4 o-click.

  5. #25
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    When I pull my charging handle all the way to the rear, the bolt face moves behind the ejection port.
    Without seeing it with a slow motion camera, I am assuming the the bolt is dragging the brass into the back of the ejection port.
    It could be a combined issue with the ejector spring and maybe needing a heavier buffer (using an H buffer in 16" BCM Middy)

    After shimming the receiver extension with a washer, ejection is normal.

    One reason it bothered me was because I was unsure if the hefty dents in the brass would be ok for reloading.

    No I did not have any malfunction issues either, but I just felt its not how its supposed to be.

    Shortening the receiver extension would be the desirable solution, but I lack the tools to grind it. Maybe a quality receiver extension would help. Mine is unknown.
    I am unsure if I will let it go or continue to tinker (It is a hobby after all, It is not a duty weapon, and I dont use it for HD)

    This is just my experience, yours may be different.
    When I brought this up in another thread the general consensus was to leave it alone...
    Last edited by saddlerocker; 01-19-12 at 22:39.

  6. #26
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    Quote Originally Posted by saddlerocker View Post
    After shimming the receiver extension with a washer, ejection is normal.

    One reason it bothered me was because I was unsure if the hefty dents in the brass would be ok for reloading.

    No I did not have any malfunction issues either, but I just felt its not how its supposed to be.

    Shortening the receiver extension would be the desirable solution, but I lack the tools to grind it. ..

    Last edited by GrumpyM4; 01-19-12 at 23:09.

  7. #27
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    Aw, shucks...

    Wait...

    Did I just log into Arfcom?

    Quote Originally Posted by saddlerocker View Post
    When I pull my charging handle all the way to the rear, the bolt face moves behind the ejection port.
    Without seeing it with a slow motion camera, I am assuming the the bolt is dragging the brass into the back of the ejection port.
    It could be a combined issue with the ejector spring and maybe needing a heavier buffer (using an H buffer in 16" BCM Middy)

    After shimming the receiver extension with a washer, ejection is normal.

    One reason it bothered me was because I was unsure if the hefty dents in the brass would be ok for reloading.

    No I did not have any malfunction issues either, but I just felt its not how its supposed to be.

    Shortening the receiver extension would be the desirable solution, but I lack the tools to grind it. Maybe a quality receiver extension would help. Mine is unknown.
    I am unsure if I will let it go or continue to tinker (It is a hobby after all, It is not a duty weapon, and I dont use it for HD)

    This is just my experience, yours may be different.
    When I brought this up in another thread the general consensus was to leave it alone...

  8. #28
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    Thats what I figured......

  9. #29
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    Yup, that's what we figured too......





    On that note, do you work for Red Jacket firearms by any chance?
    Last edited by GrumpyM4; 01-19-12 at 23:57.

  10. #30
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    Quote Originally Posted by saddlerocker View Post
    Thats what I figured......
    Shimming and grinding parts is entirely useless, and will increase the chances of serious issues...

    If you are having actual issues, it would be one thing to replace the parts, but this is not shop class, so put down the grinder... Not only that, but the "issues" you are describing are simply not a real problem, and don't need to be tinkered with or "fixed" at all, much less in the manner you are describing.


    Quote Originally Posted by GrumpyM4 View Post
    On that note, do you work for Red Jacket firearms by any chance?
    Last edited by DeltaSierra; 01-19-12 at 23:58.

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