UTG PRO AR15 Ops Ready S3 Mil-spec Stock Kit built for heavy-duty operations with the tightest tolerance controls to provide the most secure fit and function. The Mil-spec stock is molded from impact resistant high-strength polymer in black, the mil-spec diameter extension tube is precision machined from aircraft grade aluminum with rolled threads and anodized for best corrosion and wear resistance. Rubberized butt pad and a slanted cheek rest enhances shooting stability and promotes consistent firearm control. Integral ambidextrous sling loop and QD. Unique 6.05 length and sub compact profile for superior lightweight performance with 6 position adjustability- Combine with our Super Slim Handguards for a Superior Firearm Handling Experience. Snag free performance with fully dehorned corners and melted contours for increased comfort. Includes polymer stock, mil-spec 6 position extension tube, buffer, buffer spring, tear-drop ring and castle nut. Proudly made in USA.