ERGO CASTLE NUT FOR AR15 BLK
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We don’t know when or if this item will be back in stock.Description
ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.
- Standard Mil-Spec CAR castle nut
- Made from steel and coated black
Product Information
| Color | Black |
| Manufacturer Part # | 4971-B |
| Model | Castle Nut |
| Subcategory | Long Gun Parts |
| Manufacturer | Ergo Grip |