The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big bore build. Match this with their M5 .308 lower receiver for a solid and dependable fit.

Features:

• M4 Feedramps
• .2795 takedown pin holes
• DPMS High Profile (.210) Tang
• Includes port door and forward assist