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I have three of those for my two-tone Norc 1911 and they work just fine.
BTW, you can improve the function of your Norinco mags by stripping them, deburring the followers and witness holes inside the mag and giving them a clean and lube. This is not to say you shouldn't go for the Mec-Gar, of course...
Thanks for the suggedtion. I went with mecgar only because i wanted something else from marstar. Ill pick some up next time though to try them out. They are cheaper than mecgars for sure.