{"product_id":"cmmg-bbl-and-bcg-kit-16-1-5-7x28mm","title":"CMMG - 16.1\" Barrel and BCG Kit, 5.7x28mm, 4140CM, SBN","description":"\u003cp\u003eThe \u003cb\u003eCMMG 16.1\" Barrel and BCG Kit\u003c\/b\u003e is expertly designed for building a carbine-length AR chambered in 5.7x28mm. Utilizing CMMG's patented \u003cb\u003eRadial Delayed Blowback\u003c\/b\u003e operating system, this kit offers a significant reduction in felt recoil compared to traditional blowback systems, while maintaining essential features like last round bolt hold open. This innovative system also reduces the weight of the bolt carrier group (BCG), enhancing the overall handling of your firearm.\u003c\/p\u003e\u003cp\u003eDesigned for seamless integration, the kit is compatible with a Mk4\/mil-spec AR15 upper and can be paired with either a CMMG Mk57 lower receiver or a Mk4\/AR15 mil-spec lower receiver when using CMMG 5.7 AR Conversion Magazines. This flexibility makes it an excellent choice for enthusiasts looking to customize their AR platform with a reliable and efficient 5.7x28mm setup.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCaliber:\u003c\/b\u003e 5.7x28mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBarrel Length:\u003c\/b\u003e 16.1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e 4140 Chrome Moly Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Salt Bath Nitride (SBN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating System:\u003c\/b\u003e Radial Delayed Blowback\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Mk4\/mil-spec AR15 upper, CMMG Mk57 or Mk4\/AR15 mil-spec lower receivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e 2.5 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eLifetime Quality Guarantee\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e 2.5 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCaliber:\u003c\/b\u003e 5.7x28mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Barrel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CMMG","offers":[{"title":"Default Title","offer_id":44945427398745,"sku":"RSR-CMMG57D0476","price":565.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/9860\/2329\/files\/cmmg_RSR-CMMG57D0476-1.jpg?v=1790387740","url":"https:\/\/mountainready.online\/products\/cmmg-bbl-and-bcg-kit-16-1-5-7x28mm","provider":"mountainready.online","version":"1.0","type":"link"}