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UTG PRO Mil-spec 6 Position Receiver Extension Tube Kit

Features:

- 6 Position Mil-spec Diameter Receiver Extension Tube for AR15 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

Includes:

- Mil-spec 6 Position Extension Tube
- Carbine Buffer
- Buffer Spring
- Receiver End Plate
- Castle Nut

Specifications:

- Material: Aluminum
- Height: 1.45
- Length: 7.25
- Weight: 9.3 oz
- Color: Black