Enhance your accuracy with the Tiger Rock Inc. BR168-GLD 5.56 NATO Carbine Length Barrel, engineered for excellence and precision. Crafted from durable 4150 heat-treated chrome moly steel, this 16-inch barrel features an effective 1:8 twist rate, ensuring exceptional performance with 5.56 NATO ammunition. The striking gold TiN coating enhances both aesthetics and longevity, making it a standout addition to your AR-15. Length: 16" Caliber: 5.56 NATO Twist Rate: 1:8 Gas Block Diameter: .750" Carbine Length with 0.07 Gas Hole Diameter Thread Pitch: 1/2"x28 Material: 4150 Heat Treated Chrome Moly Steel Finish: TiN Coated (Gold Titanium Nitride) Country of Origin: Made in the U.S.A. Compatibility: Fits AR-15 Experience unmatched reliability and precision in every shot, making this barrel the perfect choice for competitive shooting.