{"product_id":"lantac-556-milspec-bcg-blk-nitride","title":"LanTac USA LLC 556 MilSpec+ BCG Black Nitride","description":"\u003cp\u003eThe LanTac 556 MilSpec+ BCG is a drop-in replacement bolt carrier group for AR-15 and M16 pattern rifles chambered in 5.56 NATO\/.223 Remington. Built to exceed military specifications, this BCG delivers reliable cycling with improved corrosion and wear resistance over standard phosphate-coated carriers. Shooters upgrade to this carrier group for enhanced durability in high-volume shooting and harsh environmental conditions.\u003c\/p\u003e\u003cp\u003eMachined from 8620 steel with a 9310 steel bolt, the entire assembly features a black nitride finish that penetrates the metal surface rather than coating it, providing superior hardness and lubricity. This finish reduces fouling buildup and simplifies cleaning. Installation is straightforward—this is a complete, drop-in BCG requiring no fitting or gunsmithing. Gas key is properly staked to MIL-SPEC standards.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Bolt Carrier Group\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M16 (5.56 NATO\/.223 Remington)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 8620 Steel Carrier, 9310 Steel Bolt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Nitride\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Complete Bolt Carrier Group (carrier, bolt, cam pin, firing pin, retaining pin)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LanTac USA LLC","offers":[{"title":"Default Title","offer_id":47943841054975,"sku":"LAN01MSPEC556NITEBCG","price":170.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1271668.jpg?v=1766603338","url":"https:\/\/doublestackstore.com\/products\/lantac-556-milspec-bcg-blk-nitride","provider":"Double Stack Store","version":"1.0","type":"link"}