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Mfg Item #: APAR505611
This AR15 Complete Upper is the same upper receiver used in our AERO M16A4 Special Edition Complete Rifle and features a 20 5.56 Barrel w/ Pinned FSB A2 Handguard and A2 Detachable Carry Handle. - Upper Features: - Upper: Standard M4 Upper Receiver - Barrel: 20 5.56 NATO Rifle Length 1:7 Twist 4150 Chrome Moly Vanadium QPQ corrosion resistant finish - Sights: A2 Detachable Carry Handle and A2 Front Sight Block w/ Bayonet Lug - Handguard: A2 Style Handguard Rifle Length - Gas System: Rifle Length Gas System - Muzzle Device: Standard A2 Flash Hider