Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit Review

What Makes Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit Stand Out?

The Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit offers a modularity previously unseen at this price point. This kit promises a simple caliber change for the UXR platform, allowing shooters to easily switch to the versatile .300 Blackout. With its intuitive design and the promise of future caliber options, it begs the question: is this the new standard for modular rifles?

For years, I’ve chased the “one rifle” concept, searching for a firearm that could handle everything from varmint hunting to tactical scenarios. The promise of readily swapping calibers always seemed like a distant dream, locked behind expensive and often unreliable platforms. When I saw the Primary Weapons Systems (PWS) UXR system and the .300 Blackout conversion kit, the potential was immediately clear: a single, adaptable rifle built around a reliable AR-pattern lower.

Upon unboxing the kit, the first thing that struck me was the build quality. The barrel had a robust feel, and the bolt carrier group exuded precision. It was clear that PWS hadn’t cut corners on the essentials, opting for durability over fleeting aesthetic appeal. The finish was clean and consistent, inspiring confidence that the kit would withstand the rigors of field use.

Several AR platforms offer caliber conversions, but many rely on proprietary parts or require extensive gunsmithing. Companies like Daniel Defense and LWRC International offer excellent rifles, but their conversion options often involve complete upper receiver assemblies, costing significantly more. The Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit distinguishes itself by its relative affordability and ease of installation, making it an attractive option for shooters who want versatility without the premium price tag.

My initial excitement was tempered by a healthy dose of skepticism. Modularity is great in theory, but flawless execution is critical. However, the apparent simplicity of the XChange system, combined with PWS‘s reputation for quality, instilled a cautious optimism that this conversion kit could deliver on its promises.

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Real-World Testing: Putting Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit to the Test

First Use Experience

The initial test took place at my local range, an outdoor facility with covered firing lines. I focused on verifying the ease of the conversion and function with .300 Blackout ammunition, both supersonic and subsonic. The weather was mild, around 60 degrees Fahrenheit, with a slight breeze.

The conversion process was surprisingly straightforward. Aligning the dots on the barrel, bolt, and magwell made the installation almost foolproof. Within a few minutes, my UXR lower was transformed into a .300 Blackout platform. I loaded up several magazines with both 110 grain supersonic and 220 grain subsonic ammunition. Both cycled flawlessly without any adjustments to the gas system.

Extended Use & Reliability

Over the following months, the Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit saw extensive use across a range of conditions. I took it hog hunting in the Texas brush, ran it through several carbine courses, and even used it on a suppressed night hunt. The rifle has seen at least 500 rounds of mixed .300 Blackout ammunition, and continues to impress.

The conversion kit has proven remarkably durable. Despite being subjected to dirt, mud, and the occasional downpour, it shows no signs of significant wear or corrosion. Cleaning is simple, involving a standard AR cleaning regimen for the barrel and bolt carrier group. This is a massive upgrade from some of the AR platforms I have used in the past.

Compared to my previous experiences with multi-caliber AR builds, this conversion kit stands out due to its consistent performance and user-friendly design. Past rifles often suffered from finicky gas systems or required frequent adjustments when switching between supersonic and subsonic ammunition. This kit has been a game-changer.

Breaking Down the Features of Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit

Specifications

The Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit is designed to convert an existing PWS UXR rifle into a .300 Blackout platform. It features a 10.5-inch barrel chambered in .300 AAC Blackout. The magazine capacity is dependent on the magazine used in conjunction with the correct magwell insert and AR lower receiver.

The kit includes a .300 Blackout barrel, a .300 Blackout bolt carrier group, and a .300 Blackout magwell insert. The black color blends seamlessly with most AR platforms. This compatibility is essential for those seeking flexibility without sacrificing performance.

Performance & Functionality

The Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit excels at providing reliable .300 Blackout performance in a compact package. The 10.5-inch barrel offers a good balance between maneuverability and ballistic performance, making it suitable for a variety of applications. It has performed admirably.

One of the kit’s strengths is its ease of use. The dot system makes caliber conversions nearly idiot-proof. However, the kit lacks any explicit instructions on gas system settings for various ammunition types.

The kit has exceeded my expectations in terms of accuracy and reliability. It has proven itself to be a reliable option. This is important, as a lack of reliability can greatly hinder any rifle.

Design & Ergonomics

The build quality of the Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit is excellent. High-quality materials ensure long-term durability. The weight is comparable to other AR-15 components, contributing to a balanced rifle.

The kit is remarkably user-friendly. The straightforward conversion process minimizes any learning curve. The simplicity of the XChange system is a testament to thoughtful design.

Durability & Maintenance

The Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit is built to last. The durable components and corrosion-resistant finish ensure years of reliable service. This is important.

Maintenance is straightforward. Normal AR cleaning procedures are sufficient. This ease of maintenance adds to the overall user experience.

Accessories and Customization Options

The kit itself doesn’t include many accessories, focusing instead on the core components for caliber conversion. However, the UXR platform is compatible with a wide range of AR-15 accessories. This allows for significant customization.

The ability to use standard AR-15 magazines and triggers, combined with the availability of various optics mounts and rail systems, makes the PWS UXR a highly adaptable platform. This versatility allows users to tailor their rifle to their specific needs. This adds to the functionality of the kit.

Pros and Cons of Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit

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Who Should Buy Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit?

This kit is perfect for shooters who want a versatile rifle capable of handling both supersonic and subsonic .300 Blackout ammunition. It benefits hunters, tactical shooters, and those looking for a compact, easily-transportable platform. Those who appreciate modularity and simplicity will also value the XChange system.

Those who need a dedicated .300 Blackout rifle may find a purpose-built platform a better option. Also, shooters unfamiliar with AR-15 platforms might find the initial setup slightly daunting. New users should consider getting a more traditional rifle.

A quality optic and a reliable suppressor are must-have accessories to maximize the potential of this kit. A good sling and weapon light will also enhance its functionality in tactical applications. These accessories will greatly enhance the user experience.

Conclusion on Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit

The Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit is a well-designed and reliable option for converting a UXR rifle into a .300 Blackout platform. Its ease of use, combined with its high-quality construction, makes it a standout product in the modular rifle market. It is a great kit.

At $499.95, the price is justified given the kit’s performance and versatility. This is especially true when compared to the cost of purchasing a separate .300 Blackout rifle. The price is worth it.

I wholeheartedly recommend the Primary Weapons Systems UXR .300 Blackout 10.50” Barrel Conversion Kit to anyone seeking a flexible and reliable multi-caliber AR platform. Explore the possibilities of the UXR and experience the freedom of effortless caliber conversion.