{"product_id":"advanced-technology-a5101020-ar-15-castle-nut-mil-spec-steel-black","title":"Advanced Technology A5101020 AR-15 Castle Nut Mil-Spec Steel Black","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis steel AR-15 castle nut is virtually indestructible and works with commercial, military, and hybrid buffer tubes. It fits most AR-15s and AR variants, but it is not compatible with 308 rifles.\u003c\/span\u003e\u003c\/p\u003e","brand":"Advanced Technology","offers":[{"title":"Default Title","offer_id":52669005332802,"sku":"CFS92322","price":8.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/Screenshot_2023-12-01_at_2.11.40PM__12118.1701457908.1280.1280.png?v=1774274713","url":"https:\/\/centerfiresystems.com\/products\/advanced-technology-a5101020-ar-15-castle-nut-mil-spec-steel-black","provider":"Centerfire Systems","version":"1.0","type":"link"}