The UTG Model 4 Ops Ready S1 Mil-spec Stock is molded from an impact resistant high-strength polymer. The stock has a built-in rubberized butt pad, and slanted cheek rest for a better cheek weld when shooting. The stock also has dual storage compartments with removable waterproof caps which are perfect for storing up to 8 CR123 batteries. The stock has an ambidextrous sling loop and QD sling swivels for left or right handed shooters. All corners of the stock are dehorned for snag free use and user comfort. Fits Mil-Spec buffer tubes. Proudly made in the USA.