Precision Reflex AR15 Rifle Length Top Rail for Gen 3 Round Forearms Black. The rail is constructed of T6 6061 hard coat black anodized aluminum. The overall length of rail is 17 3/8'' and weighs 9.5 ounces. Rail comes with all the screws and bar nuts to attach rail to the upper. Flat dark earth Cerakote finish avaiable upon request. Specifications for Precision Reflex AR15 Top Rail Forearms: Manufacturer: Precision Reflex Color: Black Fabric/Material: Aluminum Cant: 0 MOA Gun Make: AR Platform Package Contents: Precision Reflex AR15 Top Rail Forearms Precision Reflex 05-073-06: AR15 Rifle Length Top Rail for Gen 3 Round Forearms Black