Colt that started out as a 6520 that I put a 6920 upper on. The grip is an old A1, with a little rubber gap reducer. I hate the finger groove of the A2.
Troy rear sight, LaRue mount, 1.5x Compact ACOG TA44R-4.
Big thanks to Grant for the Troy sight and the LaRue mount!
http://img.photobucket.com/albums/v6...ndBones001.jpg
http://img.photobucket.com/albums/v6...ndBones002.jpg
http://img.photobucket.com/albums/v6...dBones003b.jpg
http://img.photobucket.com/albums/v6...ndBones004.jpg