Two words: Suu Weeet. Congrats my friend. Now, how long before the Sig gets the Win-Mag treatment? :-)
Evening Bear;Miss Rose: Since you asked about the EBR..If you do a copy and paste, this will show you what the Sig 556 looks like and tech specs.
http://www.sigsauer.com/Products/ShowCatalogProduct.aspx?categoryid=35
www.sigsauer.com
This should work, I tried and it came up for me.