So factory mags are junk from what im hearing? Apparently the black dog mags work well.I've got a CMMG .22LR upper for my AR, and it runs great, shoots quite well. My only problem is magazines, I haven't been able to find any new ones that work with it. So I have just the two I bought it with (used, still in MD, 4-5 years ago for maybe $200) but for range toy plinking that's fine.
10/10 would recommend!