Barrel Length: 16"
Sixteen inch light contour barrel. 4140 chrome-moly steel. 1 in 9 inch twist. A2 flash hider. Extruded Lo-Pro upper receiver. 6066-T6 aircraft aluminum alloy. Hard coat anodized per mil spec. Complete bolt carrier assembly. Single rail gas block. GlacierGuards handguards.
This upper comes complete with Bolt Carrier Group and charging handle.