CDNN has some unmarked CMMG 40 round mags for $12.99
now i am a big fan of the c-products 40 rounders.
on the day ordered from CDNN the C-products 40s were OOS so i picked up a couple of these CMMG's--
the mag is a little smaller and a little shorter than the c-products
. it looks to be well made. damn springs are like a bear trap ---a possible overkill in the spring department.
they came with the green USGI followers . they stick, hang and do every kind of BS you can think of bad in these 40 rd mags.
now i had a couple c-products followers so i slapped them into the CMMG mags--and now the cmmg's run like a clock.
now there is nothing wrong with the green USGI follower in a 20 or 30 round mag --but their iffy with these 40s.
personally i would say get the C-products 40 round mags instead of the CMMGs their only a couple dollars more than the CMMGs and come with the correct followers.
the CMMG can be a good mag --if you do a little work on the followers or just change the follower to a C-products or mag-pull then they run as good as the best 40s out there.
tried out the plastic 20rd thermoulds as well they seem OK enough but i haven't give them a serous run the followers on them are the "dip-O-matics" and the plastic lips seem a bit thin . they should be good enough for some light duty stuff.
i may change them over to green USGI 30 round followers--but the mag is non-standard size and they have to be trimmed to fit.
they might be good with the better followers--