These work for me , old style 20 mag pouch. They still sell them at the link below in different colors (OD, Black,etc).Had good luck dealing with them, no issues.
I use Specter Gear pouches. I have one that mounts to the stock, then I have a few more that go on my belt. The ones I have are specifically made for 20 round. 5.56mm mags, and they're US made too.
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