{"product_id":"kak-industry-m16-5-56-nato-c158-bcg-chrome-lined-phosphate","title":"KAK Industry M16 5.56 NATO C158 BCG - Chrome Lined Phosphate","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eKAK Industry M16 5.56 BCG\u003c\/span\u003e\u003c\/strong\u003e (MPN \u003cstrong\u003eMO-425-3312-003\u003c\/strong\u003e) is a mil-spec-pattern \u003cstrong\u003eM16-profile bolt carrier group\u003c\/strong\u003e machined from \u003cstrong\u003eaircraft-grade 8620 steel\u003c\/strong\u003e and properly heat treated for hard-use service. It drops into any standard \u003cstrong\u003eAR-15\u003c\/strong\u003e or \u003cstrong\u003eM16\u003c\/strong\u003e upper receiver and is built around a \u003cstrong\u003eC158 tool steel\u003c\/strong\u003e bolt - the same Carpenter 158 composition used on duty rifles - making it a reliable, drop-in choice for builders who want mil-spec internals without the premium price tag.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe carrier is \u003cstrong\u003echrome lined\u003c\/strong\u003e internally for easy cleaning and reduced carbon adhesion, while the exterior wears a \u003cstrong\u003eblack phosphate finish\u003c\/strong\u003e for corrosion resistance and a traditional GI look. This is the \u003cstrong\u003eKAK-marked\u003c\/strong\u003e version, with both the carrier and bolt stamped with the KAK logo, designed for shooters assembling a hard-use \u003cstrong\u003e5.56 NATO\u003c\/strong\u003e AR-platform rifle.\u003c\/span\u003e\u003c\/p\u003e","brand":"KAK Industry","offers":[{"title":"Default Title","offer_id":55083722834242,"sku":"198379","price":116.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_36ac8d62-6167-4065-ae75-84e6eb9a9fc7.png?v=1784768143","url":"https:\/\/centerfiresystems.com\/products\/kak-industry-m16-5-56-nato-c158-bcg-chrome-lined-phosphate","provider":"Centerfire Systems","version":"1.0","type":"link"}