{"product_id":"cmc-enhanced-bcg-6mm-arc-ntrd-blk","title":"CMC Triggers Enhanced BCG 6mm ARC – Nitrided Black","description":"\u003cp\u003eThe CMC Triggers Enhanced BCG is a precision-machined bolt carrier group designed specifically for 6mm ARC chambered AR-15 pattern rifles. This carrier group replaces factory BCGs with a component engineered for improved reliability and durability in the 6mm ARC platform, which operates at higher pressures than standard 5.56 NATO. Shooters upgrading to 6mm ARC or building a dedicated 6mm ARC upper will appreciate the proper headspace and gas key staking that CMC builds into this BCG.\u003c\/p\u003e\u003cp\u003eMachined from 8620 steel with a nitrided black finish, this bolt carrier group offers superior wear resistance and corrosion protection compared to standard phosphate coatings. The salt bath nitriding process hardens the surface while maintaining dimensional stability. Installation is drop-in for any mil-spec AR-15 upper receiver chambered in 6mm ARC—no fitting or gunsmithing required. The carrier is properly staked and ready to run.\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 pattern rifles chambered in 6mm ARC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 8620 steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Salt bath nitrided black\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, gas key, cam pin, firing pin, retaining pin)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CMC Triggers","offers":[{"title":"Default Title","offer_id":47943489618175,"sku":"CMC81635","price":183.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2137750.jpg?v=1766578494","url":"https:\/\/doublestackstore.com\/products\/cmc-enhanced-bcg-6mm-arc-ntrd-blk","provider":"Double Stack Store","version":"1.0","type":"link"}