Product Description
The LBE Unlimited ARCNUT Castle Nut is a durable AR-15 lower receiver component made from 4140 steel and finished with a protective phosphate coating. Designed for AR-15 compatibility, it provides a secure interface for receiver extension (buffer tube) installation and helps deliver reliable performance in hard-use builds. Manufactured in the USA, it’s a solid choice for new builds or replacement parts.
Product Highlights
- AR-15 castle nut designed for AR-platform lower receiver assemblies
- 4140 steel construction for strength and long-term durability
- Phosphate-coated finish for corrosion resistance and reduced wear
- Manufacturer part number ARCNUT for easy identification and reordering
- Made in the USA
Specs
- Brand Name: LBE UNLIMITED
- Product Type: AR-15 Castle Nut
- Compatibility: AR-15 / AR Platform
- Material: 4140 Steel
- Finish/Coating: Phosphate (Black / Manganese Phosphate)
- Country of Manufacture: USA
- Manufacturer Part Number: ARCNUT
- UPC: 765857617329
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