The Six Position LBE Mil-Spec Spec Diameter Buffer Tube fits all collapsible AR-15 stocks that require mil-spec tubes. This item is perfect for your current build or your spare parts bin. LBE Unlimited is a leading producer of US Made gun parts and accessories.

Features :

• Colt Gray finish
• AR-15 Milspec diameter recoil buffer tube
• Carbine receiver extension
• Pre-threaded