Crafted for enthusiasts seeking a robust foundation for their big bore build the Aero Precision M5 .308 Assembled Upper Receiver offers unparalleled quality and compatibility. This upper receiver is forged from durable 7075-T6 aluminum and features a sleek black hard coat anodized finish ensuring both resilience and aesthetics. Designed to integrate seamlessly with standard .308 components it comes preinstalled with port door and forward assist hardware adding convenience and functionality. The M4 Feedramps and .2795 takedown pin holes ensure a secure fit while the DPMS High Profile .210 Tang design provides versatility for various builds. Perfect for those looking to customize with optics this receiver is optic-ready and ideal for any semi-complete setup.