{"product_id":"lantac-usa-bolt-assembly-6mm-arc-ar-15-black-nitride","title":"LANTAC USA Bolt Assembly 6mm ARC AR-15 Black Nitride","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eLANTAC USA 6mm ARC Bolt Assembly\u003c\/span\u003e\u003c\/strong\u003e is a precision-engineered replacement bolt purpose-built for AR-15 rifles chambered in \u003cstrong\u003e6mm ARC\u003c\/strong\u003e. Manufactured from \u003cstrong\u003eMPI-inspected Carpenter 158 or 9310 steel\u003c\/strong\u003e, the bolt is hard-ground on all critical diameters, \u003cstrong\u003eS110 shot peened\u003c\/strong\u003e, and heat treated to a final hardness of \u003cstrong\u003e15N 89-90.5\u003c\/strong\u003e for the durability needed to handle the pressures generated by the 6mm ARC cartridge.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eA low-friction \u003cstrong\u003eBlack Nitride\u003c\/strong\u003e finish provides improved wear resistance and easier cleaning compared to standard phosphate coatings. The bolt drops into any AR-15 bolt carrier group to complete or refresh a 6mm ARC build, and pairs naturally with LANTAC's Enhanced Bolt Carrier Group for the same cartridge. Made in the USA by LANTAC USA and sold as the bolt assembly only; carrier and related components are not included.\u003c\/span\u003e\u003c\/p\u003e","brand":"Lantac USA","offers":[{"title":"Default Title","offer_id":55292777496898,"sku":"01UP6ARCNITBA","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/alt_6b5a21d4-0da2-45a3-98c9-3d3262c3ac06.jpg?v=1785103360","url":"https:\/\/centerfiresystems.com\/products\/lantac-usa-bolt-assembly-6mm-arc-ar-15-black-nitride","provider":"Centerfire Systems","version":"1.0","type":"link"}