Mil-Spec AR15 Receiver Extension and Rifle Buffer Kit

Features and Specifications:
Mil-spec Diameter Receiver Extension Tube for AR-15 Rifles
Extension Tube CNC Machined from 6061-T6 Aircraft Grade Aluminum with Precisely Rolled Threads for Durable Thread Engagement with Lower Receiver
Finished in Matte Black Type III Class II Hard Coat Anodize
Material: Aluminum
Color: Black

Includes:
Mil-spec Rifle Length Tube 
Rifle Buffer 
Buffer Spring