Primary Weapons Systems UXR Features The Primary Weapons Systems UXR is built around a modular XCHANGE architecture that lets the fire control housing magazine well buttstock and handguard all be exchanged independently so a single serialized 7075 aluminum receiver can be reconfigured for different roles without a gunsmith. The XCHANGE Titanium Trunnion provides a return-to-zero barrel clamp so barrels can be swapped and reinstalled while holding point of impact and the taper muzzle shoulder lock ensures perfect alignment for muzzle devices every time they re reattached. The ambidextrous rocker valve gas system offers three selectable settings to tune reliability for suppressed or unsuppressed fire while the XCHANGE Evacuation Chamber vents gas away from the shooter s face for a cleaner-running action. An 18-inch STANAG top rail provides ample real estate for optics and accessories across any configuration. Ergonomics carry through every module from the ambidextrous folding charging handle that stays snag-free for right or left-handed operation to the UXR pistol grip which remains compatible with other AR15-style grips for shooters with a preferred fit. The XCHANGE Buttstock Module folds to either side via the reversible folding stock mount and offers six positions of length of pull adjustment across 2.5 inches of travel plus a two-position height-adjustable cheek rest for a consistent cheek weld with any optic height. The tooless MLOK handguard can be swapped for length customization and the magazine well module accepts 5.56 NATO or 7.62 NATO magazines with an ambidextrous release. Shipping with one 30-round magazine this rifle suits shooters who want a duty or range platform they can adapt as their needs change. Primary Weapons Systems UXR Specifications Brand: Primary Weapons Systems Model: UXR Caliber: .223 Wylde Action Type: Semi-Auto Capacity: 30+1 Magazine Quantity: 1 Magazine Type: Detachable Barrel Length: 14.5 Barrel Finish: Blued Muzzle: Compensator Receiver Material: Aluminum Receiver Finish: Anodized Mount Type: Picatinny Rail Stock Style: Adjustable Stock Material: Synthetic Color: Black Available At: GrabAGun