This M5 .308 upper receiver assembly comes with the ejection port door and forward assist installed. The assembled upper features laser engraved T-marks, M4 feedramps and DPMS pattern .2795 takedown pin holes. Accepts standard DPMS .308 components and DPMS high profile (.210 tang) handguards. Machined from 7075 T6 forged aluminum and hard coat anodized. MADE IN THE U.S.A.