Leapers Pro Mil-Spec 6-Position Extension Tube Kit - Black

Product Features\n\n- 6-position Mil-spec Diameter Receiver Extension Tube for AR15 Rifles\n- Extension Tube CNC Machined from 6061-T6 Aircraft Grade Aluminum with Precisely Rolled Threads for Durable Thread Engagement with Lower Receiver\n- Underwent the Tightest Tolerance Controls for a Secure Fit and Function with Various Collapsible Stocks\n- Finished in a Matte Black Type III Class II Hard Coat Anodize\n- Includes Mil-spec 6-position Extension Tube, Recoil Buffer, Buffer Spring, Receiver End Plate, and Castle Nut\n- Proudly Designed and Made in USA\nProduct Specifications\n\n- Material: Aluminum\n- Height: 1.45"\n- Length: 7.25"\n- Weight: 9.3 oz\n- Color: Black