This Rosco Manufacturing Purebred 20" .223 Wylde barrel features a nickel boron stainless steel construction and is designed for precision carbine shooters. The 1:7" twist rate enhances stability for extended range shooting.Key FeaturesBarrel Length: This barrel measures 20 inches, providing optimal length for extended range performance.Caliber: Designed for the .223 Wylde chamber, allowing for versatility with both .223 Remington and 5.56 NATO ammunition.Rate of Twist: The 1:7" twist rate stabilizes a wide range of bullet weights, enhancing accuracy over longer distances.Color: Features a silver finish with nickel boron for improved corrosion resistance and durability.