AR-15 .450 Bushmaster 10.5" Pistol Build Kit | SBA3, No Lower | Moriarti Armaments

AR-15 Line

AR-15 .450 Bushmaster 10.5" Pistol Build Kit | SBA3, No Lower | Moriarti Armaments

Unleash the power of the .450 Bushmaster in an AR-15 pistol configuration with the 10.5" AR-15 .450 Bushmaster Pistol Build Kit from Moriarti Armaments. Designed for those looking to build a reliable, powerful big bore pistol, this kit features everything you need to complete your project—except the lower receiver. With premium materials, Milspec components, and a SBA3 blade stock, this kit ensures maximum performance and versatility for your AR-15.

Key Features:

• Barrel:

  • 10.5" Heavy Barrel with a 1:24 twist to stabilize .450 Bushmaster rounds effectively.

  • Made from 4150 Chrome Moly Vanadium, known for its strength and durability.

  • Parkerized finish ensures enhanced corrosion resistance.

  • Single feed ramp for smoother feeding.

  • .750 gas block system and pistol-length gas system for reliable cycling.

  • 5/8 x 32 thread pitch for optimal muzzle device compatibility.

  • Finished with a black A2 flash hider to reduce muzzle flash.

• Upper Receiver:

  • A3 flat top upper receiver made from certified 7075-T6 aluminum forgings.

  • Black hardcoat anodized to government specifications for improved durability.

  • Forward assist and dust cover installed for smoother operation.

  • SOCOM-style design for compatibility with big bore calibers.

• Gas System:

  • .750 Low Profile Gas Block made from high-quality aircraft steel.

  • Equipped with a pistol-length stainless steel gas tube for maximum reliability and smooth cycling.

• Handguard:

  • 10" Slim Profile MLOK Free Float Rail made from aircraft-grade aluminum.

  • Black hard coat anodized for scratch resistance and long-term durability.

  • Note: MLOK rails may differ in design based on availability, but the quality remains the same.

• Bolt Carrier Group (BCG):

  • .450/.458 Caliber M16 Cut BCG designed specifically for big bore rounds.

  • Nitride finish for improved wear resistance and easy maintenance.

  • Properly staked gas key for reliable gas flow.

  • Milspec/MP tested to ensure strength and durability under high-pressure conditions.

• Charging Handle:

  • Standard AR-15 Mil-Spec charging handle, anodized for improved resistance to wear.

• Lower Parts Kit:

  • Complete Mil-Spec AR-15 lower parts kit made from high-quality aluminum.

  • Includes trigger guard group and all necessary parts to complete your lower receiver.

• Buttstock:

  • SBA3 Blade with an AR-15 milspec buffer tube, castle nut, and end plate for an adjustable and comfortable fit.

  • 4.3 heavy buffer designed for big bore calibers to ensure smooth cycling and reliable performance.

  • Comes with AR-15 buffer spring for optimal function and recoil management.

Why Choose the AR-15 .450 Bushmaster 10.5" Pistol Build Kit?

The .450 Bushmaster is renowned for its powerful big bore performance, making it a favorite for hunters, tactical shooters, and those who need extra stopping power. With this 10.5" AR-15 .450 Bushmaster Pistol Build Kit, you’ll have the perfect platform to create your own custom pistol that offers both exceptional performance and reliability.

The combination of a heavy barrel, M16 cut BCG, and SBA3 blade stock provides an ideal balance of power, recoil management, and precision. Whether you are building for home defense, hunting, or tactical use, this kit gives you the versatility and quality you need.

Order Your AR-15 .450 Bushmaster 10.5" Pistol Build Kit Today

Get started on your custom .450 Bushmaster AR-15 pistol with the 10.5" build kit from Moriarti Armaments. This high-performance kit is crafted from premium materials and includes all the necessary components (except the lower receiver) to complete your build. Made in the USA, it guarantees top-notch quality and exceptional performance.

Please Note: Lower receiver not included. Kit ships within 7-10 business days. Lead times may vary during holidays or special sales events. For any inquiries or order issues, feel free to reach out via email.

Build your ultimate big bore AR-15 pistol today with Moriarti Armaments—because your next project deserves the best!

• Images may not be the exact representation of the product - mlok variations in design may occur based on stock availability.