The UTG Pro RBUS3BM Mil-Spec OPS Ready S3 Stock Kit Black Synthetic 6 Position for AR-15, M16 delivers a rugged, American-made solution designed for heavy-duty use and precise fit, combining Mil-spec craftsmanship with a lightweight sub-compact profile. Proudly designed and made in USA, this stock is molded from impact-resistant high-strength polymer in a durable black finish, while the extension tube is precision-machined from aircraft-grade aluminum with rolled threads and enhanced by anodizing for superior corrosion and wear resistance. A built-in rubberized butt pad and a slanted cheek rest enhance shooting stability and promote consistent firearm control, and the integral ambidextrous sling loop with QD sling swivel housing ensures smooth handling for left or right-handed shooters. At 6.05 inches in length with six-position adjustability, the kit offers a balanced blend of lightweight comfort and versatile fit, especially when paired with Leapers Super Slim Handguards for improved handling. Includes a Mil-spec 6-position extension tube, buffer, spring, tear-drop ring, and castle nut, while snag-free, fully dehorned corners and melted contours maximize comfort and reduce snag potential during field use.