{"product_id":"colt-5-56-bolt-carrier-group","title":"Colt's Manufacturing 5.56 Bolt Carrier Group – AR-15\/M16 Platform","description":"\u003cp\u003eThe Colt 5.56 Bolt Carrier Group is a factory replacement or spare BCG for AR-15 and M16 platform rifles. Built to Colt's mil-spec standards, this bolt carrier group delivers the reliability shooters expect from one of the most established names in the AR platform. Whether you're replacing a worn BCG, building a spare, or assembling a new upper, this unit provides proven performance for 5.56 NATO and .223 Remington chamberings.\u003c\/p\u003e\u003cp\u003eManufactured from high-quality steel with a phosphate finish, this BCG features proper staking, shot-peened components, and magnetic particle inspection. The carrier is machined to mil-spec dimensions for consistent function with standard AR-15 lower receivers and buffer systems. Installation is drop-in for those familiar with AR-15 disassembly and maintenance—no gunsmithing required, though proper headspacing should always be verified when installing any new bolt.\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 chamberings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Phosphate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In (verify headspace)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Bolt, carrier, cam pin, firing pin, retaining pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Colt's Manufacturing","offers":[{"title":"Default Title","offer_id":47935946522879,"sku":"CTSP64028","price":200.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1261938.jpg?v=1766482269","url":"https:\/\/doublestackstore.com\/products\/colt-5-56-bolt-carrier-group","provider":"Double Stack Store","version":"1.0","type":"link"}