.450 Bushmaster Uppers

.450 Bushmaster Upper Assemblies for sale

Have you ever thought about using a .450 Bushmaster Upper for hunting with your AR-15? You’re not alone in considering it. The .450 Bushmaster is gaining rapid popularity as one of the most sought-after ‘Big Bore’ cartridges.

Given its appeal, many enthusiasts are searching for the best .450 Bushmaster upper to upgrade their AR-15 rifle.

In this article, we’ll delve into the features of the .450 Bushmaster, its suitability for hunting, and how you can build your own AR-15 rifle with a .450 Bushmaster Upper.

Hunt With Your AR-15 Using a .450 Bushmaster Upper

The .450 Bushmaster has gained popularity due to its reputation as one of the finest hunting cartridges, particularly for mid-range big-game hunting.

While not designed for long-range shooting, this cartridge excels as a brush gun for taking down elk, deer, and bear.

History of the .450 Bushmaster

The credit for designing the .450 Bushmaster cartridge goes to Colonel Jeff Cooper.

As a seasoned US Marine with combat experience in WWII and the Korean War, Cooper was dissatisfied with the performance of .223 Remington/5.56x45mm NATO cartridges and sought something better.

Inspired by the concept of utilizing an AR-15 platform, Cooper envisioned a cartridge similar to the .45 ACP pistol cartridge but with increased size, accuracy, and armor-piercing capabilities.

LeMag Firearms explored Cooper’s idea, but it was Bushmaster who secured the license.

Hornady, commissioned by Bushmaster, developed the .45 Professional for this concept. However, Hornady’s innovation led to further improvements, such as shortening the length to accommodate flex-tip bullets, resulting in the birth of the .450 Bushmaster.

Building a .450 Bushmaster Rifle

Building your own .450 Bushmaster rifle is a straightforward process. If you already own an AR-15 rifle, you’re halfway there.

All that’s left is to remove the existing upper, install your .450 Bushmaster upper assembly, and switch out the magazines.

You can find high-quality .450 Bushmaster uppers for sale with various barrel lengths, such as 18-inch or 16-inch, allowing you to choose the one that suits your preferences.

What .450 Bushmaster Upper Receiver Consists Of?

A complete MSF .450 Bushmaster AR-15 upper receiver assembly consists of:

• Receiver
• Bolt
• 18-inch barrel
• Handguard
• Muzzle device

You can customize your .450 Bushmaster upper receiver with additional components like bolt carrier groups, charging handles, foregrips, and optics/lights. Rest assured that each part of the Bushmaster 450 upper is assembled, quality-checked, and test-fired to meet industry standards.

Why Use the .450 Bushmaster?

Opting for a .450 Bushmaster complete upper for your hunting needs is an obvious choice.

Here are some compelling reasons why the .450 Bushmaster upper stands out as a top choice for hunters:

Compatibility: The .450 Bushmaster offers flexibility. If you already own an AR-15 5.56 NATO lower, simply attach the .450 Bushmaster upper without the need to purchase a new rifle. Some 5.56 NATO magazines are compatible with the .450 Bushmaster, depending on the brand.

Durability: Many rifles featuring a .450 Bushmaster AR-15 upper are designed for maximum durability. You have options ranging from lightweight aluminum uppers to chrome-moly or highly durable steel uppers. Regardless of your choice, selecting any of these finishes for your .450 Bushmaster upper ensures reliability.

Optimal barrel length: The 18-inch barrel length of the AR .450 Bushmaster upper provides a well-balanced rifle for hunters.

Easy installation: You won’t require the services of a gunsmith. Most .450 Bushmaster uppers are mil-spec, making installation effortless as the parts fit seamlessly.

Customization: For enhanced maneuverability and a more compact platform, consider customizing your AR-15 rifle with a .450 Bushmaster pistol upper.