FAB Defense UAS-R Precision Stock Conversion Kit is an upgrade for standard and bull-barreled Ruger 10/22 rifles, combining a classic bench-rest design with modern tactical features. Constructed from durable, lightweight fiberglass-reinforced synthetic polymer in matte black, OAL 28.93, height 5.78, width 3.34, length of pull 13.93, weighing 36.12 oz. Features 1913 Mil-Std Picatinny side and lower rails, a built-in adjustable cheek rest with 5 height options, and an ergonomic finger-groove pistol grip. Side-folding buttstock (left-folding by default) with Quick-Detach sling swivel sockets on both sides. Quick, drop-in installation with no gunsmithing required. Backed by a 25-year limited warranty. Safety note Follow all manufacturer installation instructions. Verify proper function and secure mounting before use. Comply with local firearm laws and regulations.