5.56 - .22LR upper swap?

Discussion in 'AR-15 Discussion' started by kjbcruz12, Oct 9, 2012.

  1. kjbcruz12

    kjbcruz12 New Member

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    I'm still learning about AR's and I was wondering when I get one (a 5.56), can I swap out the upper to a .22LR upper from the 5.56 and will it work? Would I need to change/swap anything else out besides the upper?
     
  2. c3shooter

    c3shooter Administrator Staff Member

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    A standard lower can have a .22 upper added- will need a different magazine. MOST 22 LR lowers cannot have a 5.56 upper. There is a size difference (width) and .22 LR has no buffer, different bolt setup, etc.
     

  3. KingTiger

    KingTiger Member

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    Some .22 upper manufacturers (CMMG, Spikes) recommend a rounded hammer vs a notched one. That swap shouldn't effect 5.56 functioning.
     
  4. slog

    slog New Member

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