The complete upper is constructed of billet machined 7075-t6 aluminum with proprietary extended aluminum hand guard w/ magpul m-lok mounting system and integrated upper/hand guard stainless steel anti-rotation pin.Its match grade 416r stainless steel barrel has polished crown/feed ramps, and is threaded.The upper also utilizes enhanced black nitride m16 bcg, lightweight forward assist, radian raptor-sd suppressor-optimized ambidextrous charging handle, and a direct impingement gas system.Receiver Finish: Radian BlackCaliber: 223 WyldeSights: None, Optic ReadyBarrel Length: 14.50"Barrel Material: 416R Stainless SteelBarrel Description: ThreadedBarrel Finish: BlackReceiver Description: AluminumHandguards: Extended w/Magpul M-LokHandguard Finish: Radian BlackBarrel Length Range: 14" to 14.99"