Once you get the itch to buy another rifle (don't worry, it's only a matter of time) try this link: http://cmmginc.secure-mall.com/shop/?shop=1&cat=33&
I just got a 20" HBAR for $570 plus shipping to my FFL. They advertise them as used, but mine looks brand new. The lower and upper were both DPMS.
My Colt and RRA are great rifles, but for $570, how can you go wrong?
