I searched and found very little here and on the 'net about the double stack single feed mags. I picked one up at a gun show today for a 9mm that I haven't finished yet. How good do they work, how much do they usually cost, and where is there a good supply of them?

I ordered some South African 9mm AR 30-rounders from CDNN several months ago.

From what I was told, they performed flawlessly. They looked to be very good quality.

The price was about $25 each I believe...

Been a while..

I have about two dozen of them....
[img]HTTP://users.adelphia.net/~masine/samag.jpg[/img]
I love them..Ive picked them up anywhere between 15$-30$ a piece...I found that there the only mags that will feed hollowpoints 100% in my RRA rifle....Turbozag...Do you know if CDNN has any more......UNDERDOG

I agree, those mags are great.  Feed and function perfectly (and they were my inspiration to make Sten mags work w/ the Colt system).  Any how, a tip, if you have your mag block, and go to a gun show, bring it along, so you can "fit" the mags in the block.  I ordered some from a place a while back and they were undersized in my ASA, but the ones I got else where were fine.  Back then, the gun shows were selling it at $50.00 each.....