The Recce rail system is the best of both worlds.  This rail ties the receiver to the PRI carbon fiber forearms top rail, but doesn't extend the full length of the forearm.  This reduces the weight and allows the shooter more variation or adjustment.  The recce rail is constructed of T6 6061 hard coated black anodized aluminum. The rail has Mil standard 1913 rail across the top and is 11.5" in length. Weighs 6.2 ounces.  The rail comes in two color options black and Cerakoted FDE.  This rail requires PRI AR15 round forearms with 8.5" top rail with lugs to work correctly as designed.