Proudly made in the U.S.A. to full MIL-SPEC compliance, the UTG Pro 6-Position Stock Assembly includes everything you need to convert you lower to a collapsible stock! The MIL-SPEC 6-position tube is manufactured from aircraft-grade aluminum with rolled threading, and hard coat anodized for maximum corrosion and wear resistance. A standard action spring and 3oz carbine buffer ensure proper cycling.