The Leapers UTG PRO 6-Position Mil-Spec Stock Assembly (brand part no. RBU6BM) pairs a U.S.-made, impact-resistant polymer stock body with a U.S.-made, hard-anodized aircraft aluminum extension tube for a complete, heavy-duty stock setup built to tight tolerances. The kit arrives complete with an action spring buffer assembly, tear-drop ring, and locking ring, so there’s nothing extra to source before installing it on a mil-spec lower. It’s built for shooters who want a duty-grade stock assembly without piecing together the stock, tube, and hardware separately.

Key Specifications

• Stock body molded from impact-resistant, high-strength polymer, made in the USA.
• Extension tube machined from aircraft aluminum with hard anodizing, made in the USA.
• Built to mil-spec diameter for compatibility with standard AR-platform lowers.
• Manufactured to tight tolerance control for heavy-duty use.
• Includes a complete action spring buffer assembly.
• Includes a tear-drop ring.
• Includes a locking ring.
• Weighs approximately 18.2 oz.
• Finished in black.

Frequently Asked Questions

Does this kit include the buffer tube and hardware? Yes, it includes the extension tube, action spring buffer assembly, tear-drop ring, and locking ring.

Is this mil-spec or commercial diameter? Mil-spec diameter.

Where is it made? Both the stock body and the extension tube are made in the USA.

Buy the Leapers UTG PRO 6-Position Mil-Spec Stock Assembly

Get a complete, duty-grade stock assembly instead of sourcing the stock, tube, and hardware separately. Order the UTG PRO 6-Position Stock Assembly from our rifle stocks selection. Ships fast from a Lubbock, TX gun shop.