Primary Weapons UXR-CK-223-14 UXR Conversion Kit Black 223 Wylde Black 14.50" Barrel

The Primary Weapons Systems UXR Conversion Kit in .223 Wylde with a 14.5" barrel gives you a straightforward path to multi-caliber rifle versatility. Built around PWS's XChange system, this kit lets you swap barrel, bolt, and magwell to adapt your rifle to different shooting needs—whether you're zeroing in on precision rifle matches, tactical training, or general range work. The modular approach cuts out the guesswork: a simple dot-matching system keeps you from mixing incompatible components during conversion, so you spend less time troubleshooting and more time shooting.

What makes the UXR stand out is its practical engineering. Instead of wrestling with proprietary tools or complex assembly steps, you get an intuitive design that treats caliber swaps like they should be: quick and reliable. The .223 Wylde chamber is known for its flexibility—it'll reliably shoot both 5.56 NATO and .223 Remington loads, making it a sensible foundation for a conversion platform.

If you've been tempted by modular rifle systems but balked at the cost or complexity, the UXR conversion kit approach offers real versatility without overcomplicating your setup. You keep one lower receiver and swap the upper components as your shooting demands change. This kit gives you the .223 Wylde option; Primary Weapons Systems continues expanding caliber and barrel-length choices for the platform, so future growth is built into the concept.

Key Features

• XChange system allows quick swaps of barrel, bolt, and magwell between caliber configurations
• .223 Wylde chamber handles both .223 Remington and 5.56 NATO ammunition
• 14.5" barrel length
• Intuitive dot-matching system eliminates installation errors during conversion
• Black finish

Specifications

Frequently Asked Questions

What ammunition does .223 Wylde shoot?

.223 Wylde chambers are designed to safely and reliably fire both .223 Remington and 5.56 NATO ammunition, giving you flexibility at the range or in the field.

How does the XChange system work?

The XChange system lets you swap the barrel, bolt, and magwell to convert your rifle between different caliber options. A dot-matching system on the components ensures you're pairing the correct parts together each time, eliminating guesswork during assembly.

Is this a complete rifle or a conversion kit?

This is a conversion kit—it includes the barrel, bolt, and magwell components that swap into your existing UXR lower receiver. You'll need the lower assembly and furniture to build a complete rifle.

What's the barrel length, and what does it affect?

This kit comes with a 14.5" barrel. Barrel length influences muzzle velocity, sight radius, handling characteristics, and legal status in some jurisdictions—verify local regulations if this is your first short-barrel AR-pattern build.