LBE Unlimited ARCNUT Castle Nut 4140 Steel Black Phosphate AR-15
$6.82
The LBE Unlimited ARCNUT Castle Nut is a robust 4140 steel replacement for your AR-15 buffer tube assembly. Built tough and finished in black phosphate, it’ll hold up to years of shooting and maintenance cycles without stripping or loosening.
In stock
Description
This castle nut from LBE Unlimited is the real deal—made from quality 4140 steel and treated with black phosphate for corrosion resistance. It’s the kind of small part that matters when you’re building or maintaining an AR-15, keeping your buffer tube securely fastened where it belongs. Whether you’re upgrading a factory rifle or finishing a build, this nut will outlast cheaper alternatives and handle multiple install-and-remove cycles. It’s the no-nonsense choice for shooters who don’t cut corners on their platform rifle.
Additional information
| UPC | 765857617329 |
|---|---|
| Mfr Item Number | ARCNUT |
| Manufacturer |





















Reviews
There are no reviews yet.