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Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped Color: Black, Finish: Hardcoat Anodized, $39.96 Off w/ Free Shipping

Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD
Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD
Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD
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Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD
Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD
2 of 2 images
Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD

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Helpful Negative Review
Alternative upper by Truso, Verified Owner, September 24, 2025
I originally bought an Aero I really wanted but after waiting 4 weeks for order that kept getting pushed out I made the decision to try this upper. The 10.5 DOES NOT look like the photo. It has a longer hand guard and the muzzle device is different. ...
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Color:
Black
Finish:
Hardcoat Anodized
Fabric/Material:
7075-T6 Aluminum
Caliber:
.300 AAC Blackout
Gun Make:
AR Platform
Gun Model:
AR-15
Condition:
New

Code: 5MY-UPR-L92AOP-MAR-300-10-SHRD

MPN: MAR-300-10-SHRD

UPC: 799787098569

List: $399.95Save 10%
$359.99

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped

Moriarti AR-15 300 Blackout 10.5 in Pistol Upper Assembly / Mlok / Shroud is a top-of-the-line assembly designed for the AR-15 rifle platform. It features a 10.5-inch barrel that is chambered in the 300 Blackout round. This powerful cartridge is known for its efficiency and versatility, capable of delivering both super and subsonic rounds effectively.image

WARNING: California`s Proposition 65

Specifications for Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped:

Manufacturer: Moriarti
Color: Black
Finish: Hardcoat Anodized
Fabric/Material: 7075-T6 Aluminum
Caliber: .300 AAC Blackout
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Bolt Carrier Group Included: No
Charging Handle Included: No
Gas Block Journal Size-Diameter: .750 in
Handguard Type: Free-Float
Barrel Twist Rate: 1-7
Threads per Inch: 5/8x24
Barrel Profile: Medium
Barrel Length: 10.5 in
Barrel Material: 4150 CMV Steel
Muzzle Device: Reverse Thread Mini Shroud
Handguard Length: 10 in

Features of Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped

  • The Pistol Upper Assembly is designed with a 1:7 twist rate to stabilize the heavier rounds associated with the 300 Blackout.
  • The Shroud helps in managing heat and reducing muzzle rise during shooting. It often enhances the aesthetic of the firearm too.
  • Lightweight
  • Minimalist design.

Package Contents:

  • Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped

What firearm models does the manufacturer say Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped is compatible with?

The manufacturer says that Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped is compatible with AR-15

Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped Orderable Models

List of Orderable Models

  • Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD , MPN: MAR-300-10-SHRD , UPC: 799787098569 , Code: 5MY-UPR-L92AOP-MAR-300-10-SHRD

Moriarti AR-15 10.5 inch .300 Blackout Upper Receiver Stripped Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Moriarti Upper Receiver Stripped, AR-15, .300 Blackout, 10.5 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Mini Shroud, Hardcoat Anodized, Black, MAR-300-10-SHRD , MPN: MAR-300-10-SHRD-DEMO , Code: 5MY-UPR-L92AOP-MAR-300-10-SHRD-DEMO
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Last updated 2026-07-28 UTC.