UTG Pro AR15 6-position Receiver Extension Tube Mil-spec Matte Red

UTG PRO Mil-spec 6-position Extension TubeFeatures:6-position Mil-spec Diameter Receiver Extension Tube for AR15 RiflesExtension Tube CNC Machined from 6061-T6 Aircraft Grade Aluminum with Precisely Rolled Threads for Durable Thread Engagement with Lower ReceiverUnderwent the Tightest Tolerance Controls for a Secure Fit and Function with Various Collapsible StocksFinished in a Matte Black, Matte Red and Matte Blue Type III Class II Hard Coat AnodizeProudly Designed and Made in USASpecifications:Material: AluminumHeight: 1.45"Length : 7.25"Weight: 4.0ozColor: Black Anodize, Red Anodize, Blue Anodize