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Aluminum Castle Nut

Lightweight aluminum castle nut, hard coat anodized.
Availability: In stock
$9.99
- +

Our aluminum AR15 receiver extension nut (castle nut) is a lightweight option for your next rifle or pistol build! Weighing less than an ounce, our castle nut is an easy upgrade over a milspec castle nut with a parkerized finish.

We recommend using Loctite® Threadlocker Blue 242 on the threads during installation to prevent the nut from loosening during use.

Our aluminum AR15 receiver extension nut (castle nut) is a lightweight option for your next rifle or pistol build! Weighing less than an ounce, our castle nut is an easy upgrade over a milspec castle nut with a parkerized finish.

We recommend using Loctite® Threadlocker Blue 242 on the threads during installation to prevent the nut from loosening during use.

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