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.
Specifications:
| Type | Buffer Tube |
| Model | AR-15 |
| Dimensions | |
| Size | Mil-Spec |
| Material | 6061-T6 Aluminum |
| Action | |
| Trigger | |
| Safety | |
| Thread Pattern | |
| Finish | Black Hardcoat Anodized |
| Bolt Type | |
| Hand | |
| Hammer Type | |
| Max Capacity |