I've been checking here most days. You can't place an order online if they are not in stock.  I just ordered some so I'm assuming they have them.

http://www.ambientweather.com/mainma30stpm5.html

Followed the link and it looks like they are out to me, tried to add them to my cart and it said out of stock.

Yep there out, so the search continues.

Yup, I called them yesterday and they were out of stock.  I have managed to find them here and there.  I have painstakingly searched.  I has paid off though.  I now have 10 windowed black 30 round mags and an additional 6 od green mags enroute.  I need em, I'll use em for work and I'll get some to my brother who is going back to Iraq.  Most places I have spoken with have said that theres a min. 75 day backorder.  It's only getting further back.