UTG PRO® AR15 6-position Receiver Extension Tube, Commercial-spec, Black

• 6-position Commercial-spec Diameter Receiver Extension Tube for AR15 Rifles
• Extension Tube CNC Machined from 6061-T6 Aircraft Grade Aluminum with Precisely Rolled Threads for Durable Thread Engagement with Lower Receiver
• Underwent the Tightest Tolerance Controls for a Secure Fit and Function with Various Collapsible Stocks
• Finished in a Matte Black Type III Class II Hard Coat Anodize