I am selling my Colt upper as I just replaced it with a DD Mk18 upper I bought here on the forum. it comes with the Matech rear BUIS and a Surefire FH556-212A Flash Hider. I have 150 rounds through this upper, please see the pictures for the full details. email is the absolute best way to get a hold of me.
Colt 6920 Upper with DD RIS II rail, Matech Rear BUIS, and Surefire FH. no BCG no CH.