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Thread: spring loaded and fixed ejectors

  1. #1
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    spring loaded and fixed ejectors

    It seems that most would say that a fixed ejector is better than a spring loaded ejector for reliability but I think there's more to it.

    I think that a spring loaded ejector actually provides a more positive ejection simply because once the casing clears the chamber, whether the carrier experienced a short stroke or not, it gets ejected forcefully.

    I understand and have experienced that when a rifle suffers from a short stroke with a fixed ejector, the casing may dribble out or may not even leave the weapon. In rifles such as the FAL, the ejector is so far back that a short stroke can cause a double feed. I could only imagine that had it been a spring loaded ejector, issues like that wouldn't have been documented.

    The ar15 gets some flak for having a spring loaded ejector because it may get filthy and fail, but I've never read a whole lot of reports on failing ejectors, not as much as failing bolts! This just tells me that the spring loaded ejector issues may be a tad exaggerated.

    What do you think? Is one better than the other? I'd say that the extistance of both is a matter of how the internals operate. When you have a bolt riding on rails, it would make sense to use a fixed ejector. When the carrier is the only reciprocating piece riding on rails, it would be easier to put the ejector onto the bolt face itself.

  2. #2
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    All i know is that when I replace my ejector spring after 5000 rounds, i immediately notice a more "Robust" ejection pattern. With a fixed ejector, you get what you get.

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    It is what it is- neither is immune to failure. I have seen many issues with the AR type ejector. Does that make it bad? Not in my opinon, it just meant that I maintain the weapon properly.

    A bad ejector in an AR will cause double-feeds. Until caseless ammo works we will just have to take care of out extractors and ejectors.

    FWIW- for some reason girls blush when you tell them to be sure to lube their ejectors .
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  4. #4
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    Lube the ejector? What is that and how do you do it? I think I have heard that comment about 100 times or so.

    Quote Originally Posted by Failure2Stop View Post
    It is what it is- neither is immune to failure. I have seen many issues with the AR type ejector. Does that make it bad? Not in my opinon, it just meant that I maintain the weapon properly.

    A bad ejector in an AR will cause double-feeds. Until caseless ammo works we will just have to take care of out extractors and ejectors.

    FWIW- for some reason girls blush when you tell them to be sure to lube their ejectors .



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  5. #5
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    Quote Originally Posted by Iraqgunz View Post
    Lube the ejector? What is that and how do you do it? I think I have heard that comment about 100 times or so.
    I think it means putting a drop of lube on the bolt face so it'll flow down into the ejectory channel.

  6. #6
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    Quote Originally Posted by markm View Post
    I think it means putting a drop of lube on the bolt face so it'll flow down into the ejectory channel.
    Yep, then you take a spent casing and using to exercise the ejector (it is a little a hard to do with a stiff ejector but it helps get the lube in all the right places).

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    I think I may have done that once or twice. But I don't make a habit of it. It's not a part of my regular cleaning or maintenance.

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    ***********end of line
    Last edited by Toten Kopf; 01-14-09 at 07:16.

  9. #9
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    Gunz-
    What markm and telecustom said.

    I turn the bolt at about a 45 degree angle with the ejector at the bottom and create a pool of CLP with the dropper. The work the ejector in and out, either with a piece of brass/dummy or a suitable tool until the ejector moves freely and quickly to the fully extended position.

    I have seen issues with worn-out ejectors, excessively dirty ejectors, and fouled ejectors- possibly due to out of spec brass.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  10. #10
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    What is the expected life span of a spring loaded ejector? At how many rounds does the weapon suffer serious malfunctions due to a worn out ejector/ ejector spring?

    Doesn't the M240 use a spring loaded ejector? For a machine gun to use a spring loaded ejector, I'd only suspect that it takes quite a while until you see profound effects of ejector or ejector spring failure, otherwise it would have never been designed that way.

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