The Aero Precision Standard 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. Charging handle and bolt carrier group not included.
- M4 Feedramps
- .250 takedown pin holes
- Port door and forward assist installed