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Moriarti AR-15 16 inch .300 AAC Blackout Upper Receiver Assembly MAR-300-16-15-TRI Caliber: .300 AAC Blackout, Barrel Length: 16 in, 15% Off w/ Free S&H

Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI
Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI
Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI
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Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI
Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI
2 of 2 images
Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI

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Questions & Answers
Caliber:
.300 AAC Blackout
Barrel Length:
16 in
Barrel Profile:
Medium
Gas System Length:
Pistol Length
Barrel Twist Rate:
1-7
Handguard Type:
Free-Float
Muzzle Device:
Tri Port Muzzle Brake
Finish:
Hardcoat Anodized
Color:
Black
Handguard Length:
15 in
Barrel Material:
4150 CMV Steel

Code: 5MY-URC-FA7A1Z-MAR-300-16-15-TRI

MPN: MAR-300-16-15-TRI

UPC: 799787099290

List: $399.95Save 16%
$335.99

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 16 inch .300 AAC Blackout Upper Receiver Assembly

AR-15 300 AAC blackout 16 in pistol length upper assembly w/ 15 in M-lok is a perfect addition to your AR pistol. No other modifications to your AR-15 is required. Uses standard AR-15 BCG. All you need is 300 BLK ammo and this upper - and you have a new AR.image

WARNING: California`s Proposition 65

Specifications for Moriarti AR-15 16 inch .300 AAC Blackout Upper Receiver Assembly:

Manufacturer: Moriarti
Caliber: .300 AAC Blackout
Barrel Length: 16 in
Barrel Profile: Medium
Gas System Length: Pistol Length
Barrel Twist Rate: 1-7
Handguard Type: Free-Float
Muzzle Device: Tri Port Muzzle Brake
Finish: Hardcoat Anodized
Color: Black
Fabric/Material: 7075-T6 Aluminum
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Gun Rail: M-LOK
Gun Make: AR Platform
Gun Model: AR-15
Barrel Material: 4150 CMV Steel
Bolt Carrier Group Included: No
Charging Handle Included: No
Magazine Included: No
Last Chance: Yes
Mount Type: M-LOK
Threads per Inch: 5/8x24

Package Contents:

  • Moriarti AR-15 16 inch .300 AAC Blackout Upper Receiver Assembly

What firearm models does the manufacturer say Moriarti AR-15 16 inch .300 AAC Blackout Upper Receiver Assembly is compatible with?

The manufacturer says that Moriarti AR-15 16 inch .300 AAC Blackout Upper Receiver Assembly is compatible with AR-15

Moriarti AR-15 16 inch .300 AAC Blackout Upper Receiver Assembly Orderable Models

List of Orderable Models

  • Moriarti Complete Upper Receiver, AR-15, .300 AAC Blackout, 16 inch Barrel, Medium Profile, Pistol Length, 1x7 Twist, 5/8X24 Thread, M-LOK Handguard, Triport, Hardcoat Anodized, Black, MAR-300-16-15-TRI , MPN: MAR-300-16-15-TRI , UPC: 799787099290 , Code: 5MY-URC-FA7A1Z-MAR-300-16-15-TRI
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Last updated 2026-07-29 UTC.