AR-15 5.56/.223 24" Stainless Steel Fluted Bull Upper Assembly – M-LOK

24" 5.56 Upper: Specs & Features

AR-15 5.56/.223 24" stainless steel fluted bull upper assembly includes:

Barrel - 24" 416 stainless steel fluted bull barrel. Hardened to 26-32 rc and stress relieved.  Chambered in 223 Wylde (accepts 5.56 NATO and .223 rounds). 1-8 rh twist 6 groove button rifled. .936 under gas block. M4 feedramps. Rifle gas system. Target crown (no threads).

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 - .936  steel gas block, hardcoat anodized. Rifle length gas tube.

Handguards - 15" rifle-length free float slim mlok. Made from aircraft quality aluminum and black hard coat anodized. 

Does not come with BCG and/or Charging Handle. Maybe purchased separately. Weight 6.5lb

CA, NY and NJ compliant.  Images may not be an exact representation of the product. Currently using straight fluted variant of barrel.

FAQ

Will this upper fit my AR-15 lower?

Yes. It fits any standard mil-spec AR-15 lower receiver and uses a standard 5.56 bolt carrier group and STANAG/AR-15 magazines.

What is a .223 Wylde chamber?

A hybrid chamber that safely fires both 5.56 NATO and .223 Remington while giving the tighter accuracy of a .223-style throat.

Is a bolt carrier group included?

No. The bolt carrier group is sold separately; any standard 5.56 AR-15 BCG will work.

What twist rate does it use?

A 1:8 twist, a versatile rate for 55 gr to 77 gr bullets.

Related: 5.56 NATO & .223 Wylde AR-15 uppers