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10.5" 5.56 NATO AR-15 Upper Assembly – Nitro-Met Quad Rail, SOCOM-Style Shroud

Brand:Moriarti Armaments
Product Code:MAR-556-10-SOCOM
Availability:In Stock
  • $249.95

  • $399.95

Available Options

10.5" 5.56 Upper: Specs & Features

The Moriarti 10.5" Nitro-Met Quad AR-15 Upper Assembly features a 5.56 NATO barrel, traditional 10" free-float quad-rail handguard, and a Gen 2 Micro SOCOM-style barrel shroud available in seven anodized colors.

The assembly combines a 10.5" 4150 chrome moly steel barrel with Nitro-Met treatment, a 1:7 twist rate, and a carbine-length gas system. Its forged 7075-T6 aluminum A3 flat-top receiver features a black hardcoat-anodized finish, installed forward assist, dust cover, and M4 feed ramps.

The Gen 2 Micro SOCOM-style accessory features a T6 aluminum body and steel threaded adapter. It functions as a barrel shroud rather than a sound suppressor or muzzle brake.

Key Features

  • 10.5" 5.56 NATO Barrel: 4150 chrome moly steel with Nitro-Met surface treatment.

  • 1:7 Barrel Twist: Right-hand rifling.

  • 10" Free-Float Quad Rail: Black hardcoat-anodized aluminum handguard with four Picatinny rail surfaces.

  • Gen 2 Micro SOCOM-Style Shroud: T6 aluminum body with steel threaded adapter.

  • Seven Shroud Colors: Black, Grey, Red, Gold, Purple, Blue, and Green.

  • Carbine-Length Gas System: Includes a .750 low-profile steel gas block.

  • Forged A3 Upper Receiver: 7075-T6 aluminum with black hardcoat anodizing.

  • Forward Assist and Dust Cover: Installed.

  • M4 Feed Ramps: Included.

Specifications

SpecificationDetails
ManufacturerMoriarti Armaments
PlatformAR-15
Product TypeUpper Assembly
Chamber5.56 NATO
Compatible Ammunition.223 Remington
Barrel Length10.5"
Barrel Material4150 Chrome Moly Steel
Barrel TreatmentNitro-Met
Barrel Twist1:7 RH
Gas SystemCarbine Length
Gas Block.750 Low-Profile Steel
Barrel Threads1/2x28
Handguard10" Free-Float Quad Rail
Handguard FinishBlack Hardcoat Anodized
Upper ReceiverForged 7075-T6 Aluminum, A3 Flat-Top
Receiver FinishBlack Hardcoat Anodized
Feed RampsM4
Forward AssistInstalled
Dust CoverInstalled
Muzzle AccessoryGen 2 Micro SOCOM-Style Barrel Shroud
Shroud BodyT6 Aluminum
Shroud AdapterSteel
Shroud Length3.5"
Shroud Outside Diameter1.5"
Shroud Weight4.3 oz
Barrel CoverageApproximately 2.5"
Shroud FinishAnodized, Customer Selection
Shroud ColorsBlack, Grey, Red, Gold, Purple, Blue, Green
Bolt Carrier GroupNot Included
Charging HandleNot Included
Lower ReceiverNot Included

Package Includes

  • Assembled 10.5" 5.56 NATO upper assembly

  • 10" free-float quad-rail handguard

  • Installed carbine-length gas system with steel gas block

  • Gen 2 Micro SOCOM-style barrel shroud in selected color

  • Steel threaded shroud adapter

  • Forged A3 upper receiver with forward assist and dust cover

Bolt carrier group, charging handle, and lower receiver are not included.

Frequently Asked Questions

Is the SOCOM-style accessory a functional suppressor?

No. The Gen 2 Micro SOCOM-style accessory is a barrel shroud. It does not function as a sound suppressor.

Does this upper have an M-LOK handguard?

No. This model features a traditional 10" free-float quad rail with Picatinny mounting surfaces.

What shroud colors are available?

Black, Grey, Red, Gold, Purple, Blue, and Green.

What gas block is included?

A .750 low-profile steel gas block.

Are the bolt carrier group and charging handle included?

No. Both components are excluded from the standard package.

Product Image Notice

Images may not be the exact representation of the product.

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?

Yes. This upper ships with a bolt carrier group, so it is ready to install on a compatible AR-15 lower.

What twist rate does it use?

A 1:7 twist, the mil-spec rate that stabilizes 55 gr through heavy 77 gr loads.

What does the shroud do?

It slips over the muzzle device and pushes blast forward, away from the shooter.

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

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Tags: 5.56 upper, ar-15 upper, 223 wylde upper, 10.5 inch 5.56 upper, quad rail, socom shroud

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