UXR THE NEW PROPRIETARY UXR, OR "USER XCHANGE RIFLE", IS THE PINNACLE OF FIREARM INNOVATION. THIS REVOLUTIONARY SYSTEM OFFERS UNMATCHED MODULARITY AND PERFORMANCE. FEATURES: XCHANGE Buttstock Module: Picatinny/1913/STANAG Rail mount interface, foldable with 6 position adjustable length of pull for 2.5" travel, ambidextrous LOP button and QD sling cups, 1" webbing sling slot mount, comfort-shoot rubber buttpad, and completed with a 2 position, height-adjustable cheek rest. Reversible Folding Stock Mount: Choose your preferred side for folding the XCHANGE Buttstock Module. XCHANGE Fire Control Housing Module: ergonomi Mfg: Primary Weapons