Brownells Brn-4 16 Inch Heavy Chrome Lined 5.56 Nato Barrel 1-7 1/2-28

The Brownells BRN-4 5.56x45 NATO 16'' Heavy Chrome Lined Barrel with Phosphate finish delivers a precise, reliable foundation for your BRN-4 rifle build, combining rugged protection with proven performance. This chrome-lined, heavy-contour barrel features a 16-inch length, a 1-7 twist developed for stability with a wide range of 5.56 NATO ammunition, and 1/2-28 muzzle threads for versatile muzzle device compatibility. The black finish pairs with the durable phosphate treatment to resist wear and corrosion while maintaining a clean, low-profile appearance on the firearm. Designed to pair seamlessly with Brownells BRN-4 components, it provides a robust platform for long-range accuracy, consistent velocity, and dependable cycling in diverse field conditions. The heavy contour helps dampen heat and maintain barrel life during sustained shooting, making it a solid choice for both precision-oriented builds and duty-ready configurations. Whether you're assembling a dedicated varmint rifle, a versatile tactical platform, or a dependable sporting rifle, this barrel's dimensions, finish, and threading are optimized to deliver reliable performance and repeatable results across a wide assortment of 5.56x45mm NATO loads.