Hey, I got a good deal on these a few months back and I bought too many. I have 5 for myself and these are my extras that don't get used (I have more than what is pictured)
I got them for $20/Mag (some have been sold, pm me for quantities), so that's what I'll sell them to GT'ers for (+ actual shipping). They Retail for $30. Never had a single issue with any of these, they're great.
Here's the website: http://www.57center.com/6m8/magazines.html
I have a lot of positive feedback on Ebay (trob500) 4,300+, and on Calguns.net (trob) 80+.
Will ship to CA, but I will disassemble them for use outside of CA