The ar-15 assembled upper receiver comes with the port door and forward assisitalready installed.Forged from 7075-t6 aluminum, this assembled upper is precision machined to mil-spec m16/m4 specifications and features m4 feedramps.Match this upper with one of aero's ar15 lower receivers for a solid and dependable fit.This upper features m4 feedramps,.50 takedown pin holes, laser engraved t-marks and includes a port door and forward assist.This assembled upper comes in anodized black.

Receiver Finish: Black Hard Coat Anodized
Type: Stripped
Caliber: Multi-Caliber
Sights: None, Optic Ready
Barrel Length: N/A
Receiver Description: A3