Home / AR Lower Components / LBE UNLIMITED CASTLE NUT “LBE UNLIMITED CASTLE NUT” has been added to your cart. View cart LBE UNLIMITED CASTLE NUT$8.99 6 in stock [] LBE UNLIMITED CASTLE NUT quantity Add to cart 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… LBE UNLIMITED CASTLE NUT $8.99 Add to cart Related products Out of stock SIONICS Receiver Extension Kit w/ H2 Buffer & Sprinco Blue Spring $99.95 Read more SOLGW AMBI SAFETY SELECTOR KIT $33.25 Add to cart Magpul ASAP – Ambidextrous Sling Attachment Point $30.35 Add to cart Magpul ASAP QD – Ambidextrous Sling Attachment Point QD $28.45 Add to cart