I finally managed to get into the 2012 Walmart firearm order book and found a lack of ordering information for evil black rifles like Sigs or Bushmasters, but I did find the listing for the cool Ruger Gunsite Scout rifle. It is running for about $760 or so. Not exactly a 'deal'. It would be about that or less at most gunshops.
Sadly, this and the Ruger Mini series were the most evil and black rifles in the book. Yet, the Sig 522s, 556s, and m400s as well as Bushmasters are being sold. Still working on more info.