Pennsylvania Firearm Owners Association
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  1. #11
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    Default Re: Brass ejection problems- AR-15

    my funky made of tons of parts from all over the place hasnt had any ejection or ftf issues so far. I just need a sight tool and some time to learn how to sight it in.

  2. #12
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    Default Re: Brass ejection problems- AR-15

    Quote Originally Posted by Kaos View Post
    my funky made of tons of parts from all over the place hasnt had any ejection or ftf issues so far. I just need a sight tool and some time to learn how to sight it in.
    I have a sight tool....but you do know....you can use a .223 rounds to move the front sight post.....

    I taught Chuck Norris to bump-fire.

  3. #13
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    Dec 2007
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    Philadelphia, Pennsylvania
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    Default Re: Brass ejection problems- AR-15

    1. What front sight do you have? Is it by any chance the YHM flip up?

    2. When you look at the bolt face, are there flakes of brass on it?
    1. No. Standard front sight but midlength gas tube.
    2. Yes, now that you mention it.


    Gas key is tight.
    Is there any way to check gas block alignment without taking off the front sight?

    I suppose it could just be an ammo issue. I shot 120 rounds of Privi on the first outing with no trouble whatsoever.

  4. #14
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    Default Re: Brass ejection problems- AR-15

    It could be an ammo issue. Shitty ammo may cause the rifle itself to short stroke. Get some different ammo and see if that alleviates the problem. There may be a problem with the buffer spring too if it does it with everything you feed it. There is also a gas ring on the bolt itself. Make sure all the tiny holes are in different positions instead of lining up in the same area. That can also cause some problems. For me and safeties sakes, I would tap out the gas tube and see if there is anything wrong with it. Without actually seeing the rifle and what it does, no way I can tell what may be ailing it.
    "A government big enough to give you everything you have, is also big enough to take it all away.
    Gerald Ford.

    Happiness is 5,000 rounds of match ammo.

  5. #15
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    Default Re: Brass ejection problems- AR-15

    It sounds like either the gas block isn't properly positioned over the gas port, or possibly, the gas port is improperly/incompletely drilled (yes, I've seen this on a big name barrel, with their front sight tower installed on top of it).

    The fact that it worked with PRVI and not with some other stuff somewhat supports this. I've found PRVI to be pretty warm. As in a consistent 3150 out of a 16 inch barrel warm. This would make up for a problem with the gas system, which would be more apparent with sporting ammo.

    Call Del Ton, they generally have good customer service.
    PREPARE FOR BATTLE

  6. #16
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    Default Re: Brass ejection problems- AR-15

    Quote Originally Posted by DPB View Post
    It sounds like either the gas block isn't properly positioned over the gas port, or possibly, the gas port is improperly/incompletely drilled (yes, I've seen this on a big name barrel, with their front sight tower installed on top of it).
    AHH YES!!! Good call hoss, I almost forgot that one! I have seen that happen as well. Could be a problem with the gas tube as well, maybe bent or something.
    "A government big enough to give you everything you have, is also big enough to take it all away.
    Gerald Ford.

    Happiness is 5,000 rounds of match ammo.

  7. #17
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    Default Re: Brass ejection problems- AR-15

    You know how "Experience is what you get when you don't get what you wanted"?

    That's how I found out about gas ports that aren't fully bored out.
    PREPARE FOR BATTLE

  8. #18
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    Oct 2007
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    West Chester, Pennsylvania
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    Default Re: Brass ejection problems- AR-15

    Quote Originally Posted by Kaos View Post
    I just need a sight tool and some time to learn how to sight it in.
    Save your money on a sight tool and buy an eye glass repair kit. All you need to adjust the front sight is a small-point rod of metal that will fit in the sight adjustment hole. Heck, the U.S. Army manual says a dummy .223 round is all you need. (I suppose a live .223 round would suffice, but for safety purposes lets pretend we all use dummy rounds )
    "We must all hang together, or, most assuredly, we shall all hang separately." -Benjamin Franklin

    M91/30 ~ Stag 15 Model 2

  9. #19
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    Default Re: Brass ejection problems- AR-15

    I took the handguards off. Is the gas tube supposed to have a slight bend?

    There was some powder residue on the gas tube near the FSB so I guess whatever joint is there is not airtight although that could be normal.


    What's next? Should I take off the front sight? Could I get the gas port lined up better than Delton or should I just send it back to them? Wish I kept that box...

  10. #20
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    New Castle, Pennsylvania
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    Default Re: Brass ejection problems- AR-15

    Yes, it should have a slight bend. How much residue up there?

    You could take the front sight base off and check, but those pins are tight and can need replaced if you beat them up too badly. They are, however, cheap.

    I taught Chuck Norris to bump-fire.

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