The Tiger Rock Inc. BRPIS-10P 5.56 NATO 10.5" barrel delivers unmatched quality and performance, tailored for serious firearm enthusiasts. Manufactured in the USA from premium 4150 Chrome Moly Vanadium steel, its 10.5" length ensures optimal maneuverability while ensuring accuracy and precision. Length: 10.5 inches for enhanced portability Material: High-grade 4150 Chrome Moly Vanadium steel Twist Rate: 1:7 for bullet weight versatility Gas System: Carbine length for reliable cycling Finish: Durable parkerized for corrosion resistance Compatibility: Works with various muzzle devices Upgrade your AR platform with the Tiger Rock BRPIS-10P barrel for enhanced performance and reliability.