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ERGO CASTLE NUT FOR AR15 BLK
ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.
Features:
Features:
- • Standard Mil-Spec CAR castle nut
- • Made from steel and coated black
| Product Attributes | |
| Hand | Ergo Grip |
| MOA | Castle Nut |
| Manufacturer | 4971-B |