Experience unmatched accuracy with the Tiger Rock Inc. BR3168-N AR-300BLK/300AAC 16" Pistol Length Barrel, engineered for superior performance and exceptional durability. Manufactured from premium 4140 gun quality steel, this barrel is heat-treated for enhanced strength and features a sleek black nitride finish, making it an optimal choice for your AR-15 platform. Length: 16" .300 BLK (AAC Blackout) 1:8 Twist for superior stability .750" gas block diameter Pistol gas system with a 0.125" gas hole diameter 5/8"x24 Thread Pitch Heat treated to RC 28-32 hardness, stress relieved Black Nitride Finish for durability Made in the U.S.A. Fits AR-15 platforms Enhance your firearm's capabilities with this high-performance barrel, ideal for dedicated shooters and enthusiasts alike.