The Douglas CONTOUR #3 Ultra Rifled Barrel, built from chrome moly steel and designed for the AA?K .30 Caliber (.308) platform, combines proven durability with precision-lean performance to elevate rifle accuracy and consistency. Featuring a 1-10 twist and a #3 contour, this barrel is engineered to stabilize a wide range of hollow-point and full-power match-grade loads while delivering clean, uniform rifling that promotes excellent velocity retention and reduced copper fouling during extended sessions. Its exacting manufacture supports tight initial group sizes, making it a reliable choice for long-range shots, varmint engagements, or adept competition use where predictable performance matters. As a key rifle part, its robust construction and optimized profile work together to balance weight, stiffness, and heat dissipation, helping shooters maintain sight picture and follow-through without sacrificing handling. Whether upgrading a factory barrel or building a precision-ready rifle from the ground up, the Douglas CONTOUR #3 Ultra Rifled Barrel delivers consistent bore quality, repeatable accuracies, and a durable platform that stands up to demanding field and range conditions.