{"product_id":"wmd-nib-x-upper-recr-5-56-stripped","title":"WMD Guns NIB-X Upper Receiver 5.56 Stripped – AR-15 Platform","description":"\u003cp\u003eThe WMD Guns NIB-X Upper Receiver is a stripped 5.56 NATO\/.223 Rem upper designed for AR-15 pattern builds. This forged 7075-T6 aluminum upper arrives with WMD's proprietary NIB-X coating applied to all internal and external surfaces, providing permanent lubricity and corrosion resistance far exceeding standard anodizing or phosphate finishes.\u003c\/p\u003e\u003cp\u003eThe NIB-X nickel boron coating reduces friction and wear while making carbon fouling wipe away with minimal effort. This stripped upper includes M4 feed ramps and requires a separately purchased bolt carrier group, charging handle, handguard, and barrel assembly. Standard mil-spec dimensions ensure compatibility with all AR-15 lower receivers and aftermarket components. Upper arrives ready for custom build configuration.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO \/ .223 Remington\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Stripped Upper Receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lower:\u003c\/strong\u003e AR-15 \/ M4 Platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged 7075-T6 Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e NIB-X Nickel Boron Coating (Internal \u0026amp; External)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Stripped Upper Receiver Only (No BCG, Charging Handle, Barrel, or Handguard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Requires Armorer's Wrench and Standard AR-15 Assembly Tools\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WMD Guns","offers":[{"title":"Default Title","offer_id":47939839426815,"sku":"WMDNIBXUF","price":107.1,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5584906.jpg?v=1766548501","url":"https:\/\/doublestackstore.com\/products\/wmd-nib-x-upper-recr-5-56-stripped","provider":"Double Stack Store","version":"1.0","type":"link"}