Product Description The WMD Guns NiB-X Bolt Carrier Group (BCG) Without Hammer in Black finish delivers exceptional reliability and long-lasting performance for AR-style rifles chambered in 5.56 NATO. All BCG components are NiB-X (Nickel Boron) coated and precision polished to drastically reduce fouling adherence, keeping your firearm cleaner and more reliable through extended use. The NiB-X coating is backed by a lifetime guarantee against chipping, spalling, or flaking, and has proven its durability through more than 30,000 rounds of Government protocol endurance testing without any coating wear. Whether you are running a short-barrel rifle or a suppressed platform, this BCG is engineered to handle the additional heat and carbon buildup those configurations generate. Product Highlights Lifetime Coating Guarantee: NiB-X coating is guaranteed for life against chipping, spalling, or flaking for lasting durability. Government-Tested Endurance: Withstood over 30,000 rounds in Government protocol endurance testing with zero coating wear. Easy Cleaning and Maintenance: The polished NiB-X surface significantly reduces fouling adherence, simplifying cleaning and upkeep. Heat Treated Components: All components are heat treated to maximize strength, longevity, and overall reliability. Optimized for SBR and Suppressed Platforms: Especially beneficial in short-barrel and suppressed setups where heat and carbon buildup are elevated. Specs Brand: WMD Guns Type: Bolt Carrier Group (BCG) Configuration: Without Hammer Caliber: 5.56 NATO Finish: NiB-X (Nickel Boron) Black Coating Guarantee: Lifetime against chipping, spalling, and flaking Endurance Testing: 30,000+ rounds Government protocol UPC: 855899003829 MPN: NIBXBCG0001-BLK Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>