Home / AR Lower Components / LBE UNLIMITED CASTLE NUT 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 Lower Parts Kit – Deluxe – Single Selector $99.95 Read more Out of stock FORWARD CONTROLS DESIGN PF-40 TAKEDOWN AND PIVOT PINS $28.50 Read more Magpul Enhanced Trigger Guard, Aluminum – AR15/M4 – Black $18.95 Add to cart Out of stock SOLGW Carbine Receiver Extension Kit w/ H Buffer & White Sprinco Spring $117.47 Read more