Home / AR Lower Components / LBE UNLIMITED CASTLE NUT View cart “Magpul ASAP QD – Ambidextrous Sling Attachment Point QD” has been added to your cart. LBE UNLIMITED CASTLE NUT$8.99 2 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 Magpul B.A.D. Lever – Battery Assist Device – AR15/M4 $31.30 Add to cart Out of stock SOLGW AMBI SAFETY SELECTOR KIT $28.50 Read more CMMG Parts Kit, AR15, Lower Pins and Springs $13.99 Add to cart Bravo Company Manufacturing MIL-SPEC Carbine Stock Hardware Kit $57.95 Add to cart