The UTG PRO AR-15 Ops Ready S4 Mil-Spec Stock Kit in Flat Dark Earth (FDE) finish is a complete stock assembly designed for heavy-duty tactical applications. Featuring 4-position adjustability and a compact 4.28-inch length this kit provides optimal length of pull when wearing load bearing vests or plate carrier systems.UTG PRO AR-15 Ops Ready S4 Mil-Spec Stock KitFlat Dark Earth (FDE) finish4-position adjustable with 4.28-inch compact lengthImpact resistant high strength polymer constructionComplete kit includes mil-spec extension tube buffer buffer spring receiver end plate and castle nutBuilt with tight tolerance controls for secure fit and functionDesigned for AR-15 platform firearmsEngineered for tactical operators and enthusiasts who demand reliable performance in demanding conditions. The complete mil-spec kit ensures proper function and compatibility with standard AR-15 receivers.