I have a new Smoke Composites 15" Handguard for a AR-10 DPMS platform. It was never installed on my rifle, I ultimately decided to special order one from them a little longer for my application. Smoke Composites does excellent work, this is a very nice piece. Barrel nut and screws are included. Please see the below link for exact weight etc.
$275 shipped
HAND GUARDS | smokecomposites
$275 shipped
HAND GUARDS | smokecomposites