Aero Precision APAR308505C M5 308 Winchester/7.62 NATO Brl Finish The M5 .308 Stripped Upper Receiver is the ideal upper for your big bore rifle build. Forged from 7075- T6 aluminum, this stripped upper is precision machined to accept standard .308 components. It featurs M4 Feedramps, .2795 takedown pin holes (DPMS size), and a DPMS High Profile (.210) Tang. This stripped upper receiver is finished in FDE Cerakote. Type: Stripped Caliber: 308 Winchester/7.62 NATO Sights: None, Optic Ready Barrel Length: N/A Receiver Description: 7075-T6 Aluminum M4 Receiver Finish: FDE Cerakote