AR-15 5.56/.223 16" STAINLESS STEEL "GOLF BALL" UPPER ASSEMBLY INCLUDES:
Barrel - 16" 416r stainless steel hbar contour barrel, stainless steel fluted. Hardened to 26-32 rc and stress relieved. Chambered in .223 Wylde, 1-8 rh twist.* Button rifled. .750 under gas block. Ball fluted. 1/2-28 threads, completed with a stainless steel muzzle brake and a crush washer. M4 feedramps. Carbine length gas system.
A3 flat top upper receiver - made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to gov. specs. Forward assist and dust cover installed. M4 feedramps.
Gas system - low profile .750 steel gas block, hardcoat anodized. Carbine length gas tube.
Handguards - 12" slim free floating keymod rail. Made from aircraft quality aluminum and black hardcoat anodized. Also available in Mlok and Quadrail free floating rails.
Does not come with BCG and Charging Handle. Maybe purchased separately.