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Thread: Anyone here rebarrel an AR to 6.5 Grendel?

  1. #1
    Member Float Pilot's Avatar
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    Default Anyone here rebarrel an AR to 6.5 Grendel?

    Just wondering. It seems like a good cartridge on paper.
    I have an old Bushmaster XM-177 shorty that I am really bored with...
    Floatplane,Tailwheel and Firearms Instructor- Dragonfly Aero
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  2. #2
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    50 Beuwolf shouldn't be boring....
    Vance in AK.

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  3. #3
    Member akhunter3's Avatar
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    Default

    Haven't done it, but I have been looking at it. Certainly seems to be better than the 5.56 though.


    If you do it, let us know how it turns out


    Jon
    Nurse by night, Alaska adventurer by day!

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    Member Matt M's Avatar
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    Default 6.5 Grendel

    Yep,

    I did it! The deal was it was the first upper I built and was curious if it would explode. I sighted it in at 50 yards, then shot it at 100 yards. I would love to tell you it was a one holer but it was more like a 2 x the bullet diameter for 5 shots. I cannot complain at all.

    I made it all for less than Alexander Arms upper. I did buy the bolt from them.

    Matt M

  5. #5
    Member Float Pilot's Avatar
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    Can I do it with a barrel and bolt change or is there more to it?
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  6. #6
    Member Matt M's Avatar
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    Barrel and bolt should do it.

    Matt M

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    Default 6.5 Grendel

    Complete uppers can be had at Alexander Arms. For barrels and bolts, Sabre Industries and Satern have them. You will need dedicated 6.5 Grendel magazines. Bolt, barrel, mags.... that is all. One can keep to a short barrel and still get good performance. 18 to 20 inches is fine.... shorties for 16+ inches will still take a caribou at 500 yards with the right ammo.

    Bullets in the 120-130 grain size do best.

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    Question Dumb Question

    I really hate to ask this, but can't seem to find an answer anywhere, so here goes.... Will a standard (223/5.56) AR mag feed the 6.5? Sorry in advance for straying from the subject. Thanks

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    Quote Originally Posted by snoriderak View Post
    I really hate to ask this, but can't seem to find an answer anywhere, so here goes.... Will a standard (223/5.56) AR mag feed the 6.5? Sorry in advance for straying from the subject. Thanks

    I think externally the mags are the same the follower is different an they hold less rounds, I think the 20 round body's hold 16 rounds of Grendel/7.62x39. I think everybody should have a full upper for both the Grendel and it's parent cartridge.
    Is there nothing so sacred on this earth that you aren't willing to kill or die for?



  10. #10
    Member Float Pilot's Avatar
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    I was wondering the same thing. The photos I have seen of the Grendel magazines give me the impression that the feed lips have been modified.

    I have asked on a couple places on the web and of course have received different answers.

    The same with the 6.8 SPC. Although those magazines appear to be closer in lip configuration to the original. But I can't get a straight answer on that either. It does seem that the 50 Beowulf can use stock magazines, but they supposedly do work better by slightly opening up the top.
    Floatplane,Tailwheel and Firearms Instructor- Dragonfly Aero
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