UTG PRO Mil-spec 6-position Extension Tube - Black

UTG PRO Mil-spec 6-position Extension Tube Features 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 Finished in Matte Black, Matte Red, and Matte Blue Type III Class II Hard Coat Anodize Proudly Designed and Made in the USA Specifications Material: Aluminum Height: 1.45" Length: 7.25" Weight: 4.0oz Color: Black Anodize, Red Anodize, Blue Anodize