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?
Location: Third bunker on the right,Central Virginia
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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.