This is a UTG PRO AR-15 Ops Ready S4 Mil-Spec Stock molded from impact resistant high strength matte black polymer. Its unique 4.28 inches length with 4 position adjustability provides comfortable length of pull and ease of shouldering firearm when wearing a load bearing vest or plate carrier system. It is built for heavy duty use with the tightest tolerance controls to provide the most secure fit and function. Includes slanted cheek restand removable 5.51 inches extended cheek rest insert, rubberized butt pad, reversible sling swivel housing and standard sling loop. Features: Black finish Ops ready S4 stock only Compact size Includes cheek rest and removable extended cheek rest insert and rubberized butt pad Fits AR-15