Aim Sports AR5CUB8 5.56 NATO 10.5" Complete Upper Assembly, Black Nitride - AR5CUB8

Complete AR-15 upper assembly chambered in 5.56x45mm NATO featuring a 10.5" black nitride barrel with 1:8" twist rate and 4150 chrome moly vanadium steel construction. Includes 7075-T6 aluminum receiver with black hard coat anodize finish and 10" M-LOK handguard; optic ready with no iron sights included.