Mil-spec. receiver extension lock nut (castle nut) for use on AR15 carbines with an adjustable stock. Perfect for your new build or as a direct replacement for worn-out parts.
Features:
- Platform:Â AR-15
- Made in the USA.
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Skip to contentMil-spec. receiver extension lock nut (castle nut) for use on AR15 carbines with an adjustable stock. Perfect for your new build or as a direct replacement for worn-out parts.
Features:
| Weight | 0.2 lbs |
|---|---|
| Manufacturer | Aero Precision |
| Bullet Condition |
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SKU: APAR308503C
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