Not too familiar with the site but the price is good and its in stock:
http://www.sportsmansoutdoorsuperstore.com/products2.cfm/ID/113256/brand/COLT
Seems like things are sitting in stock longer and longer every day
Never heard of this site, has anyone else? These caught my eye:
http://www.gunguyonline.com/advanced_search_result.php?keywords=Pmag+30+Blk+moe&x=0&y=0
Clearly need to be shipped out of state