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Thread: Extractor/Jamming issues

  1. #41
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    Quote Originally Posted by Iraqgunz View Post
    Let me try and clarify or explain.

    1. The round must extract first before it can eject. That means that the round must fully exit the chamber and the ejector must kick it loose.

    2. I don't know how the RO (whomever that is) can say it is the extractor definitively. If the chamber is tight (and they are known to be) that will slow down or stop the extraction process which means that the bolt can still travel to the rear, strip another round and then attempt to fed it.

    3. If that isn't happening and it is simply not ejecting then you to change the ejector spring.

    The problem is that you have purchased a used upper of unknown origin (in that you don't know how many rounds were through it) you probably don't know if it truly functioned ever (most people sell uppers for one or two reasons, you guess what they are) and without having a competent person to examine it, you are simply chasing your tail.

    If you have a known quality BCG and it is doing the same thing then the issue is almost certainly the chamber. I would also throw that Spike's buffer in the trash and get a real one. Also, check the buffer spring, measure it and tell us how long it is.
    Thanks for the responses.

    A few things to re-iterate:

    1. It is a Rguns complete upper mated to a Spikes complete lower, so the BCG is Rguns. Not sure how many rounds was fired before I bought it, but my first range visit to test it out (~100rds) this issue didn't happen. Could've just been a fluke?

    2. When I swapped the Rguns BCG out with my roomate's Spikes BCG, the issue somewhat still happens. With the Spikes BCG, the spent case will not eject all the way; it gets stuck in the open chamber. the next round isn't able to load.

    3. The Buffer is Spikes T2 and is well lubed. I'm planning to upgrade to a T3 and a new spring and see if this helps.

    My thoughts is that its a combination of a tight chamber and mostly just a not very good upper overall. I will take it to the range again as soon as the new parts come in and give you guys an update.

  2. #42
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    If it happened with 2 different BCG's then I am going to say that the real issue here is the barrel (chamber).

    Your only real solution is to have the chamber reamed or for you to replace the barrel.

    Buying more buffers, springs, etc... isn't going to solve it.

    Quote Originally Posted by JusticeM4 View Post
    Thanks for the responses.

    A few things to re-iterate:

    1. It is a Rguns complete upper mated to a Spikes complete lower, so the BCG is Rguns. Not sure how many rounds was fired before I bought it, but my first range visit to test it out (~100rds) this issue didn't happen. Could've just been a fluke?

    2. When I swapped the Rguns BCG out with my roomate's Spikes BCG, the issue somewhat still happens. With the Spikes BCG, the spent case will not eject all the way; it gets stuck in the open chamber. the next round isn't able to load.

    3. The Buffer is Spikes T2 and is well lubed. I'm planning to upgrade to a T3 and a new spring and see if this helps.

    My thoughts is that its a combination of a tight chamber and mostly just a not very good upper overall. I will take it to the range again as soon as the new parts come in and give you guys an update.



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  3. #43
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    I'm not sure this would work, but may help some. Have you ever tried polishing your chamber with a drill, cleaning rod and brass brush? It won't do much with a tight chamber but will remove any debris, burrs that could exist in the chamber.

    I'd say go sell it on gunboards. They love Rguns over there and think they're top tier.

  4. #44
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    You could see if anyone or any smiths in your area do work on ARs and if they have true 5.56 chamber reamers. Just to ensure that the chamber isn't smaller than it should be.
    Since the chamber isn't likely to be chromed as it should be (which also helps avoid problems like this), you won't have to worry about damaging the chrome lining.

  5. #45
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    This sounds alot like post #42.

    Quote Originally Posted by Unicorn View Post
    You could see if anyone or any smiths in your area do work on ARs and if they have true 5.56 chamber reamers. Just to ensure that the chamber isn't smaller than it should be.
    Since the chamber isn't likely to be chromed as it should be (which also helps avoid problems like this), you won't have to worry about damaging the chrome lining.



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

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