CDNN is a good company. I don’t know about the quality of their mags, though.
CDNN is a good merchant...(they sell what others produce)
but they have “cheap” items...
and “expensive” items...Sometimes their “Sale” really is a sale where the quality-”Expensive” items are cheap....
do your “due diligence” on individual products...
and yes...you usually get what you pay for.
Mags are critical-buy the BEST you can afford.
CDNN is an excellent company to buy a known product from. I’ve bought quite a number of items from them over the years at excellent prices.
However, it is generally a product I know. Magazines are critical. If I knew Magpul worked in my rifle, I’d buy from whoever had the best price on them. But if CDNN had a super price on another product, I might get one to check out.