Howard, I am glad you like your upper, as for handguards we are continuously adding to our own line up of accessories. We have our own quad rail out now that is billet and is midlength to match our uppers, and we are just about to release our own Free float tubes that address some of the problems with the original hogue tubes, while keeping the solid gripping surface many of our customers have come to enjoy. I would post a pic but we are still waiting for one component in anodizing.
Our newly designed handguards have the following upgrades
-Traditional FF barrel nut with locking ring
-4 (not the normal 2) anti rotation screws
-they are rifle length to give our midlength gas systems a cleaner look, and to aid in stability when using a bipod.
-slots milled in the front end for cooling at the gas block and to allow adjustment of the gas system without removing the hand guard
-the front is threaded for an endcap which is included with the handguard
-the front end of the tube is also drilled and tapped at the 12,3,6,9 o'clock positions to accept a short piece of rail if desired to accommodate sling, bipod, iron sight, etc. attachment. 1 section of rail is included.