Bushmaster Upper M4A3 223 16 inch Black

BUSHMASTER® M4A3 PATROLMANS CARBINE UPPER ASSEMBLY•Similar to the M4-type carbine but w/additional barrel length   •4150 chrome moly-vanadium steel barrels features hard chrome lining in bore & chamber   •Forged, lightweight 7075-T6 aircraft-quality aluminum & M16A2-designed receiver includes integral brass deflector, bolt catch assembly & raised ribs   •Hard anodized finish   •Factory headspaced, test-fired & ready-to-use