AR-15 .450 Bushmaster 7.5" Pistol Build Kit | A2 Flash Hider | Classic | Moriarti Armaments

.450 Bushmaster

AR-15 .450 Bushmaster 7.5" Pistol Build Kit | A2 Flash Hider | Classic

Looking to build a .450 Bushmaster AR-15 Pistol? The 7.5" Pistol Build Kit from Moriarti Armaments gives you everything you need to complete your AR-15 .450 Bushmaster pistol project—except the lower receiver. With a 7.5" barrel, A2 flash hider, and classic components, this kit is built for power and precision, perfect for tactical shooting, hunting, or home defense. Designed for big bore performance, it’s the ultimate base for your custom pistol build.

Key Features:

• Barrel:

  • 7.5" 4150 CMV Steel Barrel chambered in .450 Bushmaster for maximum power and accuracy.

  • Black Nitride Finish for enhanced durability, corrosion resistance, and a sleek appearance.

  • Single Feed Ramps for smooth, reliable feeding of the .450 Bushmaster round.

  • Non-fluted design for added strength and consistency.

  • .750 under gas block diameter ensures compatibility with standard gas block systems.

  • Pistol-length gas system with a stainless steel gas tube for reliable cycling and smooth operation.

  • Thread Pitch 5/8x32 to fit standard muzzle devices.

• Upper Receiver:

  • A3 Flat Top Upper Receiver made from 7075-T6 aluminum forgings, ensuring a rugged and reliable base for your build.

  • Black Hardcoat Anodized to Government Specifications for superior corrosion resistance and strength.

  • Features a forward assist and dust cover for smooth, operational performance in all conditions.

  • Socom-style for compatibility with big bore rounds like .450 Bushmaster.

• Gas System:

  • .750 Low Profile Gas Block made from aircraft-quality steel for durability and efficiency.

  • Pistol-length stainless steel gas tube designed for smooth cycling and reliability.

• Handguards:

  • 7" Slim Profile M-LOK Free Float Rail made from aircraft-grade aluminum, ensuring lightweight yet durable construction.

  • Black Hardcoat Anodized for enhanced strength and wear resistance.

  • M-LOK Design for versatile accessory attachment options, allowing you to customize your build.

• Bolt Carrier Group (BCG):

  • M16 Cut BCG, designed for .450 Bushmaster and .458 caliber compatibility.

  • Nitrided Finish for enhanced strength and corrosion resistance.

  • Gas key properly staked and Milspec/MP tested for reliability and performance in tough conditions.

• Charging Handle:

  • Mil-Spec Charging Handle made from 7075-T6 aluminum and anodized for durability and smooth operation.

• Lower Parts Kit:

  • Complete Mil-Spec AR-15 Lower Parts Kit, including all necessary components such as trigger guard group, pins, and springs.

  • Designed to provide seamless functionality and durability.

• Buttstock & Buffer System:

  • AR-15 Pistol Buffer Tube with foam and complete with castle nut, end plate, and buffer spring.

  • Includes a 4.3oz heavy buffer designed specifically for big bore calibers, ensuring reliable cycling and recoil management.

Why Choose the AR-15 .450 Bushmaster 7.5" Pistol Build Kit?

The .450 Bushmaster round packs a serious punch, and this 7.5" Pistol Build Kit from Moriarti Armaments is the perfect foundation for your custom AR-15 pistol. Designed for big bore performance, this kit includes everything you need to build your pistol, with components that are rugged, durable, and built to last.

Note: the kit comes unassembled. Images may not be an exact representation of the product.