The AR15 Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this upper is precision machined to mil- spec M16/M4 specifications and features M4 feed ramps. Match this upper with one of our AR15 lower receivers for a solid and dependable fit.
- M4 Feed ramps
- .250 takedown pin holes
- Port door and forward assist installed