The UTG Pro Mil-spec 6 position diameter receiver extension tube for AR15 rifles. The extension tube is CNC machined from 6061-T6 aircraft grade aluminum with precisely rolled threads for durable thread engagement with the lower receiver. Finished in a matte black Type III Class II hard coat anodized. Made in USA.
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| Model: | Receiver Extension Tube |
| Firearm Fit: | AR-15 |
| Type: | Buffer Tube |
| Series: | Mil-Spec |
| Diameter: | 1.148" |
| Gun Style: | AR-Platform |