Radian Weapons R0027 Complete Upper 300 Blackout 9" Black Barrel, 7075-T6 Aluminum Radian Black Receiver, Extended With Magpul M-LOK Handguard For AR-15 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. Type: Complete Caliber: 300 Blackout Sights: None, Optic Ready Barrel Length: 9" Barrel Material: 416R Stainless Steel Barrel Description: Threaded Barrel Finish: Black Receiver Description: Aluminum Receiver Finish: Radian Black Handguards: Extended With Magpul M-LOK Handguard Finish: Radian Black Barrel Length Range: 9" To 9.99"