Hi. I apologize for a question that is so elementary, pedestrian, pedantic, sophomoric, ... insert your own adjective here.
Can one buy, say, a 6.8 upper, replace the existing upper, & have a working 6.8 SPC rifle? My existing ARs are (1) an Olympic Arms and (2) a S&W M&P 15.
Thanks all.
Can one buy, say, a 6.8 upper, replace the existing upper, & have a working 6.8 SPC rifle? My existing ARs are (1) an Olympic Arms and (2) a S&W M&P 15.
Thanks all.