First Look: PWS Primary Weapons Systems UXR User Xchange Rifle

Keep your rifle, but change your caliber and change your barrel with a few simple steps.

posted on February 13, 2024
Primary Weapons Systems UXR

PWS (Primary Weapons Systems) rolled out a new product that caused quite a stir at SHOT Show 2024, in Las Vegas, NV. The ingenious innovation found in the UXR (User Xchange Rifle) platform comes from the patent-pending Xchange system. The upper receiver of the UXR is the only serialized component of the system, which enables the user to easily transition the configuration and caliber depending on their shooting needs. Components of the Xchange system include interchangeable magazine wells to accept different rifle magazine types and an easily changed barrel assembly to quickly swap calibers and barrel lengths.

The UXR innovation doesn’t stop with the functionality and modular design, but careful consideration was given to the look and feel of the firearm, combining sleek and classic aesthetics and smooth ergonomic features.

Being able to adapt in different shooting situations is important and the UXR doesn’t disappoint. A comprehensive menu of customizable features includes things like an adjustable cheek plate, ambidextrous selector switch, magazine release and charging handle help create the best shooting experience. Include an adjustable buttstock that can fold to either left or right, and you have it all.

The UXR platform features a proprietary internal operation, a “modified long-stroke piston system,” allowing the rifle to adapt and perform with a wide variety of ammunition. This system allows the user to change caliber and barrels without the need to adjust the gas system each time. The newly designed Bore Evacuator reduces back pressure especially when a suppressor is used.

Initially available early 2024, in 5.56 NATO and .300 BLK, the UXR will also be available in .308 Win. and 8.6 BLK calibers later this year.

Primary Weapons Systems (PWS) was formed in 2008 as a rifle component company but has since grown to be one of the largest firearms manufacturers in the Northwest. MSRP for the UXR is $2650, and for more information on this rifle or other products from PWS, please visit


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