I have quite a few of these (Okay, Center Industries, Adventure Line, etc.) that are names I've never heard of, nor have I seen them referred to here.  Anyone know of these?  GI contract?  I bought them pre-94 when I was freaking and wanted all I could get; cheaper the better.  

I've never had any problems, but I have never run them hard either.  If these things are problematic can the internals just be replaced, or are there generally problems with the body or feed lips that would prevent them from being reliable?

Cheers

Sounds like you have USGI mags, they are all fine.  The reason you can't find info on them is because you are posting in the general AR15 section.  You want to post in the Magazine section, and then you will find it easy to get all the info you could ever want.

all of those brands are tier 1

there good

Thanks for the response.  I'll do that.  This gets a lot of traffic, and frankly I hadn't even considered the mag thread.

Cheers