AR-15 5.56/.223 24" Black Diamond Fluted M-LOK Upper Assembly, M-LOK, Tri

24" 5.56 Upper: Specs & Features

Upgrade your AR-15 with this 24" Black Diamond Fluted M-LOK Upper Assembly / Mlok / Tri, designed for tight spaces and high maneuverability. Chambered in .223 Wylde, this upper ensures compatibility with both .223 Rem and 5.56 NATO ammunition. 

Key Features:

• Chamber: 223 Wylde (accepts both rounds, 5.56 NATO and 223 Rem)

• Barrel Length: 24"

• Twist Rate: 1:8

• Barrel Material: 416R steel

• Gas System: Rifle-Length

• Gas Block: .750 Low Profile, steel

• Muzzle Device: Triport (1/2x28 threads)

• Handguard: 15" M-LOK Slim Free Float

• Upper Receiver: A3 aluminum forgings, complete with dust cover and forward assist

• Feedramps: M4

• Bolt Carrier Group: Not Included

• Charging Handle: Not Included

Note: Rail design may vary slightly based on availability, but all variations meet Moriarti's high-quality standards.

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

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