Experience unparalleled precision with the Tiger Rock Inc. BR3168-P-GTP AR-300BLK/300AAC 16" pistol length barrel, crafted for enthusiasts seeking top-notch performance. Engineered from premium 4140 steel with a heat-treated finish, this barrel ensures optimal accuracy and longevity, making it a perfect addition to any AR-15 build. Length: 16" .300 BLK (AAC Blackout) 1:8 Twist Rate for superior stabilization .750" Gas Block Diameter Includes 6.75" Stainless Steel Gas Tube 5/8"x24 Thread Pitch Constructed from heat-treated 4140 Gun Quality Steel Parkarized Finish enhances durability Proudly Made in the USA Compatible with AR-15 Platforms Enhance your shooting precision with the Tiger Rock barrel; the perfect blend of quality and performance.