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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