AR15 Assembled Upper Receiver. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and features M4 feedramps. Threaded Forward Assist Roll Pin - Allows for simple installation of the forward assist and eliminates the chance to damage the finish during installation (pin included). M4 Feedramps .250 takedown pin holes Lazer engraved T-marks Ballistic Advantage branded AR15 Assembled Upper Receiver in Anodized Black Features: New enhanced forging that gives the upper receiver a "billet look" New Picatinny profile that blends seamlessly with our Enhanced Lowers. M4 Feedramps .250 takedown pin holes Laser engraved T-marks Includes threaded forward assist roll pin Include port door or forward assist