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so i am new to the firearm hobby, see people talk about taking the ar 5.56 and changing the upper to a 22lr for cheap shooting fun. so if i buy a s&w M&P 15-22 can i change the upper to a m&p ar 5.56? or does it only work starting with the 5.56 and changing to the 22 upper afterwards?
thanks for your help and response in advance.
thanks for your help and response in advance.