Aero Precision M4E1 Gen2 AR-15 Stripped Upper Receiver, Black

The M4E1 Threaded Upper Receiver features an angular machined design that helps it stand apart from standard mil-spec upper receivers. It is threaded to accept a standard AR15 barrel nut and forged from 7075-T6 aluminum and precision machined to work with all mil-spec AR15 parts. The M4E1 features a picatinny profile, M4 feedramps, and .250 takedown pin holes.. This model has a black hardcoat anodized finish.. NOTE: This model does not include port door or forward assist.. Category. :. Uppers. Type. :. Stripped. Caliber. :. 223 Remington/5.56 NATO. Sights. :. None, Optic Ready. Receiver Description. :. 7075-T6 Aluminum. Receiver Finish. :. Black Hard Coat Anodized