Just arrived / First impression
I have a CMMG .22 Lr conversion kit in an AR Stoner upper w/80% lower. As a retired machinist, I see no difference in your mags from the ones supplied by CMMG. The configuration at the point of load is identical [the follower is a different color, big deal]. You don't claim it but, the bolt is held open at last round. I can't wait to give them a test at the range, right now, dry operation gives smooth feed and eject thus, so far, an excellent product and reasonably priced.