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Thread: AR gas hole location in regards to rifling

  1. #11
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    apparently.

  2. #12
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    Mk 262 is good ammo, if you do your part. But, alas there is no wonder bullet.

    As for the AK. It all depends on who made yours. Most all domestically produced AK's cannot be compared to the real deal AK's for a variety of reasons. Number one being the mods to the FCG.

    Quote Originally Posted by bp7178 View Post
    I think the life of the AK and its realibility is one of the internet fabled things like the super awesome Mk 262 rounds and anything with "zombie" in front of it.

    I had more jam clearing practice when shooting AKs than any other gun by a long shot.



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  3. #13
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    Wouldn't it be a pain in the butt to align the gas hole in the barrel of the AR? The barrel extension is threaded on. This sets the timing of the rifling at the gas hole location. I guess you would need to have many barrel extensions to get one that is perfect, and even then you would probably be sacrificing perfect headspacing for having your hole in the groove.

  4. #14
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    Quote Originally Posted by CumbiaDude View Post
    Not specifying the location of the gas port to the rifling makes a rifle more accurate?
    Of course not. It's just absurd that the AK would be gas port position sensitive considering it's a marginally accurate weapon anyway.

    And the lack of port location placement certainly hasn't hurt the accuracy of the USGI rifle.
    "You people have too much time on your hands." - scottryan

  5. #15
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    Quote Originally Posted by P2000 View Post
    Wouldn't it be a pain in the butt to align the gas hole in the barrel of the AR?
    No more so than in a match M14 barrel.

  6. #16
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    Quote Originally Posted by markm View Post
    Of course not.
    Then why bring it up?
    Quote Originally Posted by markm View Post
    It's just absurd that the AK would be gas port position sensitive considering it's a marginally accurate weapon anyway.
    The AK-74 was redesigned specifically because gas port location and shape caused accuracy to fall below Soviet requirements.
    Quote Originally Posted by markm View Post
    And the lack of port location placement certainly hasn't hurt the accuracy of the USGI rifle.
    We know this. This thread was asking if there is a specification for it, and if not, what makes the AR different.

  7. #17
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    Quote Originally Posted by rsilvers View Post
    You can also use a special tool to chamfer the inside of the hole. I had that done to the 300 BLK AK.
    Why would one need to chamfer the inside of the port?
    We miss you, AC.
    We miss you, ToddG.

  8. #18
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    dull bits and incorrect feeds/speeds will raise a burr on the edge of the hole. It's an area that is hard to access with convention deburring methods. Otherwise, removing material that will erode away eventually seems, strange.

    Currently, wracking my brain to come up with a test to determine if gas port location affects accuracy.

  9. #19
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    Quote Originally Posted by CumbiaDude View Post
    Then why bring it up?
    I didn't bring it up. I had no idea that the AK's port was position specific until I read it here.
    "You people have too much time on your hands." - scottryan

  10. #20
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    Read an interesting article once discussing location of gas port versus land/groove, lots of tests and pics, just can't remember where I saw it . Anyway, conclusion was, it didn't seem to matter, aside from the holes that were 1/2 in the land and 1/2 in the groove seemed to exhibit less erosion after extended use.

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