{"product_id":"lantac-usa-m-spec-ar-15-upper-parts-kit","title":"LANTAC USA M-SPEC AR-15 Upper Parts Kit","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eLANTAC USA M-SPEC Upper Parts Kit\u003c\/span\u003e\u003c\/strong\u003e is a complete set of small components needed to assemble or service the upper receiver on any \u003cstrong\u003eAR-15 style rifle\u003c\/strong\u003e. Manufactured in the \u003cstrong\u003eUSA\u003c\/strong\u003e by LANTAC USA to current \u003cstrong\u003emilitary specifications (M-SPEC)\u003c\/strong\u003e, the kit is built using the correct materials, heat treatments, and finishes to deliver reliable drop-in performance on standard AR-15 platforms.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe UPK includes the \u003cstrong\u003eejection port cover\u003c\/strong\u003e, \u003cstrong\u003eejection port cover rod\u003c\/strong\u003e, \u003cstrong\u003eejection port cover spring\u003c\/strong\u003e, \u003cstrong\u003eforward assist assembly\u003c\/strong\u003e, \u003cstrong\u003eforward assist spring\u003c\/strong\u003e, and the associated \u003cstrong\u003esmall hardware\u003c\/strong\u003e required to complete a mil-spec AR-15 upper receiver. Each part is produced to the tight tolerances expected of a duty-grade build, making this kit equally well suited for completing a fresh build, replacing worn components, or field-stocking a service kit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eFinished in \u003cstrong\u003eblack\u003c\/strong\u003e and identified by LANTAC USA part number \u003cstrong\u003e01-PKIT-UP\u003c\/strong\u003e, this M-SPEC Upper Parts Kit is a straightforward, no-nonsense solution for builders and armorers who want mil-spec small parts for their \u003cstrong\u003eAR-15\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Lantac USA","offers":[{"title":"Default Title","offer_id":55075789996354,"sku":"194122","price":20.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_6afb5c51-7168-4652-a292-de29830c9bbe.png?v=1784755101","url":"https:\/\/centerfiresystems.com\/products\/lantac-usa-m-spec-ar-15-upper-parts-kit","provider":"Centerfire Systems","version":"1.0","type":"link"}