{"product_id":"kak-k-spec-enh-bcg-556-sv-de-chrm","title":"KAK Industry K-SPEC Enhanced Bolt Carrier Group 5.56 – Salt Bath Nitride with Desert Chromium","description":"\u003cp\u003eThe KAK Industry K-SPEC Enhanced Bolt Carrier Group delivers reliable cycling and corrosion resistance for AR-15 pattern rifles chambered in 5.56 NATO\/.223 Remington. This BCG features a dual-finish design with salt bath nitride on the carrier body for hardness and wear resistance, combined with desert chromium plating on critical internal surfaces for smooth operation and extended service life. Designed to replace factory bolt carrier groups, it's a solid upgrade for shooters seeking improved durability without excessive cost.\u003c\/p\u003e\u003cp\u003eThe carrier body is machined from 8620 steel and finished with salt bath nitride (also known as QPQ or Melonite), providing a self-lubricating surface that resists fouling and simplifies cleaning. The bolt is properly staked, MPI tested, and shot-peened for dimensional consistency. This is a drop-in component for mil-spec AR-15 upper receivers—no fitting or gunsmithing required. Installation requires basic AR-15 armorer knowledge and standard tools.\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 (5.56 NATO\/.223 Remington)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrier Material:\u003c\/strong\u003e 8620 Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Salt Bath Nitride (carrier), Desert Chromium (internal surfaces)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In (basic AR-15 knowledge recommended)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Complete bolt carrier group with carrier, bolt, cam pin, firing pin, and retaining pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KAK Industry","offers":[{"title":"Default Title","offer_id":48405471330559,"sku":"KAK425-3305-007","price":233.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5829390.jpg?v=1776435876","url":"https:\/\/doublestackstore.com\/products\/kak-k-spec-enh-bcg-556-sv-de-chrm","provider":"Double Stack Store","version":"1.0","type":"link"}