Possible to change AR between .22 and 5.56 round ?

Discussion in 'General Rifle Discussion' started by canyon289, Jul 28, 2012.

  1. canyon289

    canyon289 New Member

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    Is it possible to swap an AR 15 between rimfire rounds to 5.56 rounds? I would like to be able to practice with my AR at my local indoor ranges, and possibly change to the higher caliber round when going to the desert or a rifle range.

    What parts would I need and what problems would I run into if it is possible?

    Thanks in advance!

    ===edit===
    messed up the title, meant to say 5.56

    Fixed it for you- C3
     
    Last edited by a moderator: Jul 28, 2012
  2. Jpyle

    Jpyle New Member

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    Yes, you can buy a dedicated .22lr upper or a conversion kit.

    http://www.brownells.com/items/dedicated-22lr-upper.aspx
     

  3. c3shooter

    c3shooter Administrator Staff Member

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    HOWEVER- if you buy a .22 rimfire rifle, do not assume that because it LOOKS like an AR 15 that you can just swap uppers. Most of those .22s do not have (or need) a buffer, and there is a size difference on the lowers.

    FWIW, the US military has used a .22 LR adapter for years to shoot .22 LR from an M16 (for training where ranges are limited)
     
  4. Vincine

    Vincine New Member

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    A .22LR has enough juice to cycle a M16?
     
  5. c3shooter

    c3shooter Administrator Staff Member

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  6. sniper762

    sniper762 New Member

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  7. Overkill0084

    Overkill0084 Active Member

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    Thats what the USAF was using when I went through basic in 84. Though I think it was more for budgetary reasons than lack of range space. I was less than impressed with the results. And I was lucky, mine only jammed a couple of times. Some of them wouldn't cycle for anything. Thankfully, I never dealt with them again. Find a good one if you go that way.