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C-Products has a good reputation...for being junk. They've gone out of business for a reason.
The last bunch of used mags I bought was 40 for $100. IIRC, 3 or 4 of them were junk so I had about $3 each in them.
Lately, I have seen new OKay mags at gun shows go for $10 each and if you buy quantity, I've got them for about $6.
Stick with Center, OKay, NHMTG, Colt, and D&H mags. Learn who makes the mags by the Cage Numbers stamped on the bodies and not by the floorplate markings. Floorplates are easily changed.
But maybe it's just me...
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