Dark Hour Defense Billet Upper Receiver AR15 Black DHUPP. The upper is machined from 7075 T6 billet aluminum and has a type 3 mil-spec hard coat anodizing. The upper has extended feed ramps and a 1913 top rail. The design features a "dove tail"...
Dark Hour Defense Billet Upper Receiver AR15 Black DHUPP. The upper is machined from 7075 T6 billet aluminum and has a type 3 mil-spec hard coat anodizing. The upper has extended feed ramps and a 1913 top rail. The design features a "dove tail"...