Precision Reflex .308 Armalite Delta C. F. Forearm Gen 3 Rifle Length Flat Dark Earth. This Free floated handguard is constructed of a combination of Carbon fiber tube with an Aluminum collar and end cap with a steel barrel nut. The forearm has additional over the barrel clearance. The forearm comes with 4 rails a 8.5in rail on top and (3) 3in rails at 36 and 9 O'clock positions. Specifications for Precision Reflex Armalite Delta C. F. Forearm: Manufacturer: Precision Reflex Fabric/Material: Carbon Fiber/Aluminum/Steel Gun Make: Armalite Gun Model: AR-10 Gun Type: Rifle Gun Rail: Standard Gas System Length: Rifle Length Mount Type: Rail Quantity: 1 Features of Precision Reflex 308 Armalite Delta C. F. Forearms Rifle Length Free floated handguard Carbon fiber tube with an Aluminum collar end cap with a steel barrel nut additional over the barrel clearance Package Contents: Precision Reflex Armalite Delta C. F. Forearm Precision Reflex 03-071-01DE: .308 Armalite Delta C. F. Forearm Gen 3 Rifle Length Flat Dark Earth