I have one beater AR lower at the shop that I use for testing......and have fired 22LR,10mm, 9mm, 45 acp, 7.62 x 25, 5.56 x 45, 7.62 x 39, and soon to add 5.7 x 28 as I'm workin on a new upper.....:D
I like AK's, I have one.........but you can't just change uppers and add a magwell adaptor to...