AR-15 .458 SOCOM 16" Black Upper Assembly | MLOK Rail | Custom Heavy Brake

Product Code:MA-458-16-15-HBR-5832
Availability:In Stock
  • $299.95

  • $499.95

Available Options

AR-15 .458 SOCOM 16" Black Upper Assembly | MLOK Rail | Custom Heavy Brake

The AR-15 .458 SOCOM 16" Black Upper Assembly is designed for big-bore enthusiasts who seek unparalleled power and precision. Chambered in .458 SOCOM, this upper features a 16" 4150 CMV barrel with a 1:14 RH twist and is finished with a heavy-duty linear muzzle brake for effective recoil mitigation. The MLOK handguard offers a versatile mounting platform for accessories, while the carbine gas system ensures smooth cycling. Ideal for hunting or tactical applications, this assembly is built for durability and long-lasting performance.


Assembly Features:

  • Barrel:

    • Length: 16" for a compact yet powerful performance
    • Material: 4150 CMV steel with a parkerized finish for durability
    • Chamber: .458 SOCOM for superior stopping power
    • Twist Rate: 1-14 RH for optimal stabilization of larger projectiles
    • Thread: 5/8x32 for compatibility with most muzzle devices
    • Gas System: Carbine-length gas system for reliable cycling
    • Gas Block Diameter: .875" for robust gas flow
    • Muzzle Device: Custom Linear Muzzle Brake in hardened steel to reduce recoil and muzzle rise
  • Upper Receiver:

    • Material: Certified 7075-T6 Aluminum Forging for strength and precision
    • Finish: Black Hardcoat Anodized to MIL-SPEC for corrosion and wear resistance
    • Features: Forward Assist and Dust Cover installed for operational reliability
    • Feedramps: M4 Feedramps for smooth feeding and cycling
  • Gas System:

    • Gas Block: Low Profile .875 Steel Gas Block, Black Hardcoat Anodized
    • Gas Tube: Carbine-length stainless steel gas tube for reliable performance
  • Handguards:

    • Length: 15" Free Float MLOK Rail for customization and accessory attachment
    • Material: Aircraft-grade aluminum, black hardcoat anodized for durability
    • Design: Slim profile for optimal handling and weight savings

Compatibility:

  • BCG and Charging Handle are NOT included but are available for separate purchase.
  • Compatible with Big Bore Mil-Spec AR-15 Lower Receivers, adjusted with a 4.3 oz buffer for proper cycling.

Important Notes:

  • Images may not be an exact representation of the product; variations may exist due to stock availability.
Joseph Davis 12/28/2020

my daughter purchased this for my birthday it is absolutely. Amazing i just got a chance to finish my build and this upper ran like a champ
it did take some time to get it considering the environment today that is going to happen at 100 yards i was getting 1/2 inch groups it did not have any feed issues at all i will be telling everyone in my unit about moriarti and encourage them to buy from you guys can not wait for availability and shipping to return to normal i will be buying alot more

joe davis 08/22/2020

great product the delay in shipping was awful but it showed up and wow love this upper i will be doing business with moriarti again as soon as all this crap gets back to normal.it just takes to long right now but the upper is perfect

kayla davis 07/25/2020

this is a awesome upper extreamly happy wit the quality and finnish.i would reccomend it be prepared fpoe the shipping.it is slow

Glenn W 06/16/2019

Amazing Quality and Customer Service

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Tags: ar-15, .458, socom, 16", black, upper, assembly, mlok, rail, custom, heavy, brake

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