DealThe AR15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps.M4 Feedramps.250 takedown pin holesLaser engraved T-marks Includes port door and forward assist. from AR15 Discounts (Product 1278) |