{"product_id":"kak-ar15-bcg-m16-556-k-spec-np3-de","title":"KAK Industry AR-15 BCG M16 5.56 K-SPEC NP3 Desert Earth","description":"\u003cp\u003eThe KAK Industry AR-15 BCG M16 5.56 K-SPEC NP3 Desert Earth is a mil-spec bolt carrier group machined to M16 profile with an electroless nickel-phosphorous-PTFE (NP3) coating in desert earth finish. This BCG provides full-auto-rated durability in semi-automatic AR-15 rifles while offering superior lubricity and corrosion resistance compared to traditional phosphate or nitride finishes. The M16 profile carrier delivers increased mass for more reliable cycling with suppressed or short-barreled configurations.\u003c\/p\u003e\u003cp\u003eManufactured from 8620 steel carrier and Carpenter 158 steel bolt with proper heat treatment and magnetic particle inspection. The NP3 coating is applied inside and out, reducing friction and carbon buildup for easier cleaning and extended service intervals. Installation is drop-in for any mil-spec AR-15 or M16 lower receiver—no fitting or gunsmithing required. Gas key is properly staked per TDP specifications.\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 Rem chambered rifles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrier Material:\u003c\/strong\u003e 8620 Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Material:\u003c\/strong\u003e Carpenter 158 Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e NP3 (Electroless Nickel-Phosphorous-PTFE) Desert Earth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e M16 Full-Auto\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 Bolt Carrier Group Assembly, Firing Pin, Cam Pin, Firing Pin Retaining Pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KAK Industry","offers":[{"title":"Default Title","offer_id":47938714206463,"sku":"KAK425-0510-002","price":247.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5492998.jpg?v=1766526302","url":"https:\/\/doublestackstore.com\/products\/kak-ar15-bcg-m16-556-k-spec-np3-de","provider":"Double Stack Store","version":"1.0","type":"link"}