The UTG PRO Model4 Combat Ops S1 Mil-Spec Butt Stock is a collapsible, AR/M4 style stock constructed of weather proof and rugged high impact polymer. This 6 position stock is designed for heavy duty operations and is made with the tightest tolerances for the most secure fit and silent performance. It has a thick rubberized recoil pad, reversible QD sling swivel housing, and an ambidextrous sling loop attachment. Chamfered edges and slanted cheek rest provide the comfort youre looking for.Features :Black finishCombat Ops S16-position adjustable/collapsibleBuilt in rubberized butt badDual storage compartmentsStock onlyAR-15/M4 style