UTG AR15 6-Position Receiver Extension Tube Mil-Spec

• 6-position Mil-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
• Proudly Designed and Made in USA