Precision machined from a solid block of Billet Aluminum, these blanks are from one of the top foundries in the country and are a premium stripped upper receiver.
Utilizing an innovative surface preparation method to ensure a consistent and superior finish. These uppers utilize an M-4 feed ramp cut before being Mil-Spec Type III hard anodized.
To ensure the best fit and most accurate builds possible these are machined on the tighten end of specs to ensure a solid lockup between barrel and upper. This eliminates the chances of increased barrel harmonics especially in lighter profile barrels. Ensure there is a light coat of grease on the barrel extension prior to assembly.
Dust cover and forward assist NOT INCLUDED