AR-15 16" 5.56/.223 Blue Diamond Modular Bull Upper Assembly, 10" M-LOK

16" 5.56 Upper: Specs & Features

Features:

• Barrel: 16" 416 stainless steel bull contour barrel with diamond fluting, blue coated with flutes.

• Chamber: 5.56 NATO (also accepts .223 rounds).

• Twist Rate: 1:8 RH, 6-groove button rifled for precision shooting.

• Gas System: Carbine-length with a low-profile .936 steel gas block.

• Receiver: A3 flat top upper, forged 7075-T6 aluminum, black hardcoat anodized and Teflon coated.

• Handguard: Moriarti Mlok 10" slim profile, free-floating rail, blue hardcoat anodized.

Additional Notes:

• No BCG or Charging Handle Included – Must be purchased separately.

• Image Disclaimer – Product images may not reflect exact stock configurations.

• CA and NY Compliant.

This AR-15 16" Blue Diamond Bull Upper Assembly is an exclusive, high-performance upgrade designed for precision shooters looking for durability, accuracy, and a unique aesthetic.

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.

Can I shoot both 5.56 NATO and .223 Remington?

Yes. A 5.56 NATO or .223 Wylde chamber safely fires both 5.56 NATO and .223 Remington ammunition.

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