The Gauntlet Arms B556-10.5-76084 AR-15 5.56 NATO 10.5" Barrel is engineered for precision and performance. Built with a 10.5" length, this 5.56 NATO caliber barrel offers unparalleled reliability in tactical scenarios. Constructed from high-quality 4150 Chrome Moly Vanadium steel, the barrel features a durable phosphate finish and a nitride-coated barrel extension for enhanced corrosion resistance. Its 1:7 twist rate ensures optimal stability for a variety of projectile weights. Length: 10.5 inches Caliber: 5.56x45mm Finish: Phosphate and Nitride Twist Rate: 1:7T Gas Length: Carbine Handguard Compatibility: Freefloat, Drop-In Thread Pitch: 1/2x28 Elevate your AR-15 setup with the Sampson barrel, combining reliability and performance for any task.