AR-15 5.56/.223 20" stainless steel bull upper assembly LEFT HAND. Barrel - 20" 416 stainless steel bull contour barrel. Hardened to 26-32 rc and stress releived. Chambered in 5.56 nato (also accepts .223 rounds). 1-8 rh twist 6 groove button rifled. .936 under gas block. Target crowned. M4 feedramps. Currently we make these uppers with NITRIDE COATED barrels.
A3 flat top upper receiver - Left hand made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to gov. specs. Forward assist and dust cover installed.
Gas system - Low profile .936 steel gas block. Rifle length gas tube.
Handguards - 12" rifle length free floating Mlok handguard. Made from aircraft quality aluminum and black hardcoat anodized.
Does not come with BCG or CH. Options available on top of page. Please allow 7-10 days for your upper to be build.