Has anyone ever used them? Should I buy some or should I avoid them?
I can't speak for their M1A/M14 mags, but if they are as good as their 1911 mags, they should be great.
Their 1911 GI style mags are exactly as JMB designed them. Excellent workmanship.
HTH
Douglas
I have about a dozen CMI M1A magazines and haven't had a single problem. I believe that they under contract for current GI issue.
44MAG.com generally has the best prices: http://www.44mag.com/prodinfo.asp?number=CM20 (http://www.44mag.com/prodinfo.asp?number=CM20)