{"product_id":"lbe-unlimited-ar-15-castle-nut-4140-steel-manganese-phosphate-finish-arcnut","title":"LBE Unlimited AR-15 Castle Nut, 4140 Steel, Manganese Phosphate Finish, ARCNUT","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAR-15 castle nut designed for AR-platform lower receiver assemblies\u003c\/li\u003e\n  \u003cli\u003e4140 steel construction for strength and long-term durability\u003c\/li\u003e\n  \u003cli\u003ePhosphate-coated finish for corrosion resistance and reduced wear\u003c\/li\u003e\n  \u003cli\u003eManufacturer part number ARCNUT for easy identification and reordering\u003c\/li\u003e\n  \u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand Name:\u003c\/strong\u003e LBE UNLIMITED\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e AR-15 Castle Nut\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e AR-15 \/ AR Platform\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 4140 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Coating:\u003c\/strong\u003e Phosphate (Black \/ Manganese Phosphate)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e ARCNUT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 765857617329\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product’s manufacturer.\u003c\/em\u003e\u003c\/p\u003e","brand":"LBE UNLIMITED","offers":[{"title":"Default Title","offer_id":44077030080634,"sku":"FLX-130145","price":14.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/283694730.png?v=1767713114","url":"https:\/\/tlooutdoors.com\/products\/lbe-unlimited-ar-15-castle-nut-4140-steel-manganese-phosphate-finish-arcnut","provider":"TLO Outdoors","version":"1.0","type":"link"}