AR-15 5.56/.223 16" stainless steel pencil lightweight upper assembly features:
A3 flat top upper reciever - Made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to gov. specs. Forward assist and dust cover installed. M4 feedramps.
Barrel - 16" 416 stainless steel pencil/lightweight contour barrel. Hardened to 26-32 rc and stress releived. Chambered in 5.56 nato 1-7.5 rh twist. Button rifled. .625 in front of gas block and under the handguards. .750 under gas block. 1/2-28 threads with stainless steel compensator and crush washer. M4 feedramps.
Gas system - Low profile .750 gas block made from aircraft quality aluminum and black hardcoat anodized. Carbine length gas system.
Handguards - Carbine length slim keymod free float rail. Black hardcoat anodized.