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LBE Unlimited Castle Nut
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

LBE Unlimited

Castle Nut

$8.99
Available California compliant

LBE Unlimited Castle Nut, For AR-15, Manganese Phosphate Coated 4140 Steel ARCNUT

Key Details
Brand LBE Unlimited
Manufacturer Part Number ARCNUT
UPC 765857617329
SKU LBARCNUT
Current Stock 583 available
Quantity Updated Jun 7, 2026 12:51 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The LBE AR-15 Castle Nut is made of 4140 steel and has a Magnesium Phosphate finish. Made in the USA.

Features
  • Fits AR-15
  • Castle Nut
  • Made in the USA
Specifications
UPC: 765857617329
Manufacturer: LBE Unlimited
Manufacturer Part #: ARCNUT
Model: Castle Nut
Model (Alt): AR15
Finish: Manganese Phosphate
Type: Castle Nut