AR-15 5.56/.223 16" M4 Contour upper assembly is based on M16 original design. Simple yet elegant and durable, this is a must have for any "old school" AR enthusiast. Upper receiver features:
Barrel - 16" contour barrel. Chambered in 5.56 nato (also accepts .223 rounds). 1-9 rh twist. Parkerized finish .750 under gas block, carbine gas system. Comes with black A2 compensator and a crush washer. M4 feedramps.
A3 flat top upper receiver - made from certified 7075-T6 aluminum forgings. Lightweight, black hardcoat anodized to gov. specs. M4 feedramps.
Gas system - single top rail gas block made from aircraft quality aluminum and black hardcoat anodized. Carbine length gas tube.
Handguards - complete delta ring assembly and 2 piece A2 handguards hardcoat anodized.
Please note: Does not come with BCG and Charging Handle. Options available on top of this page.