DEMO Precision Reflex Gen 3 Free Float Forearm Carbine Length Carbon Natural. The forearm is constructed of wrapped carbon fiber with an aluminum barrel nut and collar. Total length of the forearm is 7in and weights 13oz. including barrel nut. The clearance from the center line of the barrel to the underside of the forearm is 1.1in. The receiver and the rail on forearm are not at the same elevation. The inner diameter of the barrel nut is 1.075in Custom barrel nuts with larger ID for larger diameter barrels can be made. Specifications for Precision Reflex Gen 3 Free Float Forearm: Manufacturer: Precision Reflex Color: Carbon Finish: Natural Fabric/Material: Carbon Fiber/Aluminum/Steel Gun Make: AR Platform Gun Type: Rifle Handguard Type: Free-Float Handguard Style: Round Rail Gun Rail: Standard Gas System Length: Carbine Length Mount Type: Rail Model Generation: 3 Quantity: 1 Package Contents: Precision Reflex Gen 3 Free Float Forearm Precision Reflex 05-073-01: Gen 3 Free Float Forearm Carbine Length Free Float Carbon Natural