The 5.56MM NATO 13.7'' Combat Grade Barrel from Sons of Liberty Gun Works is engineered for those who demand precision and reliability in their AR-15 rifle parts. Crafted from high-quality 4150 Chrome Moly Vanadium steel, this barrel features a robust QPQ nitride finish that enhances durability and corrosion resistance, making it ideal for both competitive shooting and tactical applications. With a mid-length gas system, this 13.7-inch barrel optimizes gas flow for smoother cycling and reduced recoil, ensuring that you maintain accuracy even in high-pressure situations. The 1:7 twist rate is designed to stabilize a wide range of bullet weights, providing versatility for various ammunition types, while the standard 1/2-28 muzzle threads allow for easy attachment of suppressors or muzzle devices. Whether you are building a custom AR-15 or upgrading your existing setup, this combat grade barrel is a perfect choice for enhancing your firearm's performance. In addition to its impressive specifications, the barrel's sleek black finish adds a tactical aesthetic that complements any rifle build. With its in-stock availability, you can quickly elevate your shooting experience with this premium barrel that embodies the quality and craftsmanship synonymous with Sons of Liberty Gun Works. Experience the difference that a high-performance barrel can make in your shooting accuracy and reliability with the 5.56MM NATO 13.7'' Combat Grade Barrel, a top-tier choice for serious shooters and enthusiasts alike.