Primary Weapons Systems debuted its UXR, or Universal Exchange Rifle, to much acclaim at SHOT Show 2024

The UXR is basically a modified long-stroke piston action that is completely modular and can be configured to shoot anything from small-framed .223 calibers to large-framed .308 calibers. Imagine going from a short-barreled .300 Blackout CQB gun to a long-range 6.5 Creedmoor sniper rifle in a few minutes! 

The Universal Exchange Rifle

 

Primary Weapons Systems UXR
The UXR's lower features an Xchange Fire Control Housing with a TriggerTech trigger and XChange Magwell. (All photos: Don Summers/Guns.com)


Starting with the upper receiver, this is the serialized part that houses the action, bolt, and trunnion. The lower is comprised of the Xchange Fire Control Housing and a separate Xchange Magwell. The fire control housing accepts most AR-15 trigger groups and pistol grips, and it supports the folding stock. The rifles ship with TriggerTech triggers. 
 

Primary Weapons Systems UXR
The folding stock is easy to manipulate.

The interchangeable magwell has different modules that can accept different magazine patterns depending on the caliber chosen, including AK-pattern chamberings and magazines. An enlarged dot identifier system is used to make sure calibers match with magwells.
 
 
Primary Weapons Systems UXR
The handguard and barrel are easily exchanged for different lengths.


The Xchange Barrel Assembly can be removed with three torqued screws. Similarly, the M-LOK handguard has different length options and is easily swapped. PWS claims barrel changes experience only .5-MOA shifts. Because it’s a modified long-stroke system, the recoil impulse is relatively soft.
 

Primary Weapons Systems UXR
A look at the disassembled UXR.


Rounding out the features: controls are completely ambidextrous, and there is a three-position adjustable gas system including a dedicated suppressor setting, and a newly designed PWS compensator to deal with recoil and muzzle rise. The 16-inch .308 rifle weighs in at 6.8 pounds, svelte for a large pattern AR-10 platform.
 

Pricing & Options


The UXR will start at around $2,500, and caliber conversion kits will be about $500. Conversion kits will include the barrel, gas system, bolt and magazine well. First guns should start shipping by the end of February. 
 

Primary Weapons Systems UXR
PWS plans to release new conversion kits every quarter to expand options for the UXR.

Initial barrels and calibers will be a 16-inch .308, 16-inch 556, and a 14.5-inch .300 Blackout. Later, PWS will release kits for 6.5 Creedmoor, 6 ARC, 8.6 Blackout and 7.62x39. More conversion kits should come every quarter.

 
Primary Weapons Systems UXR
Recoil is relatively soft on the UXR's modified long-stroke piston system. 


I’m super excited about this gun. I was able to shoot a pre-production version, and it performed well. If the full production rifle is as accurate and reliable as advertised, this may be the next must-have do-it-all gun. 

revolver barrel loading graphic

Loading