Radian Weapons Complete Upper, 223 Wylde, 14.5" Pinned (16" OAL) Barrel, 1:8 Twist, Dead Air Muzzle Device, Mid Length Gas, 14" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Gray, Fits AR-15 R0464