Home / AR Lower Components / LBE UNLIMITED CASTLE NUT Out of stock LBE UNLIMITED CASTLE NUT$8.99 Out of stock Want to be notified when this product is back in stock? Notify me UPC: 765857617329 SKU: ARCNUT Category: AR Lower Components Product ID: 3663 Description Description AR15 Castle Nut 4140 Steel Mag Phosphate Finish MADE IN THE USA You may also like… Out of stock LBE UNLIMITED CASTLE NUT $8.99 Read more Related products Magpul ASAP QD – Ambidextrous Sling Attachment Point QD $28.45 Add to cart BADGER ORDINANCE Universal Safety Selector $58.00 Add to cart Magpul Enhanced AR Magazine Release $18.95 Add to cart SOLGW AMBI SAFETY SELECTOR KIT $33.25 Add to cart