Proudly Designed and Made in USA 1.2" OD Receiver Extension Tube Compatible with AR15 Lower Receivers Precision Machined from 7075-T6 Aircraft Grade Aluminum with a Dry Film Lube Coated Interior for Smoother and More Reliable Cycling Finished in a Matte Black Type III Class II Hard Coat Anodize Compatible with Standard AR15 Type Buffers and Springs
