140 steel construction for strength and durability Magnesium phosphate finish for corrosion resistance Mil-spec compatible for AR-15 platforms

LBE UNLIMITED CASTLE NUT

LBE Unlimited
SKU:
ARCNUT
|
UPC:
765857617329
$7.99
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Description

The LBE AR-15 Castle Nut is built for secure and reliable buffer tube installation. Precision machined from durable 4140 steel and finished with a corrosion-resistant magnesium phosphate coating, it’s designed to withstand hard use while maintaining proper receiver extension retention.

Manufactured to mil-spec standards, this castle nut ensures proper fit and dependable performance on AR-15 platforms. Made in the USA, it’s an essential component for new builds, upgrades, or routine maintenance.