Product Description The Watchtower Firearms DuraBolt TTZ is a premium bolt carrier group engineered for reliability, precision, and durability. Chambered in 5.56 NATO and machined from robust 8620 steel, this bolt carrier group delivers exceptional strength and consistent performance in even the most demanding conditions. Its True Black finish provides a sleek, tactical appearance while offering enhanced resistance to wear, corrosion, and the elements. Whether you are a competitive shooter, firearms professional, or dedicated enthusiast, the DuraBolt TTZ is designed to ensure smooth, dependable cycling and long-lasting service life for your AR-15 platform rifle. Product Highlights Premium 8620 Steel Construction: Machined from high-grade 8620 steel for superior toughness and long-term durability under heavy use. 5.56 NATO Compatible: Engineered specifically for 5.56 NATO AR-15 platform rifles, ensuring precise fit and reliable function. True Black Finish: The True Black finish delivers a professional, tactical aesthetic while protecting against corrosion and harsh environmental conditions. Smooth Cycling Performance: Designed and tested to provide consistent, efficient cycling for enhanced accuracy and dependability in any situation. Direct Replacement Upgrade: A straightforward, drop-in upgrade that elevates the performance and longevity of your existing AR-15 build. Specs Brand: WATCHTOWER FIREARMS Model: DuraBolt TTZ Manufacturer Part Number (MPN): DB556TBTTZ UPC: 810085120896 Caliber: 5.56 NATO Material: 8620 Steel Finish: True Black Platform Compatibility: AR-15 Condition: New 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. ]]>