A 1:8 twist rate means the rifling inside the barrel completes one full turn every 8 inches. This twist rate is commonly used in AR-15 barrels chambered in .223 Remington, 5.56 NATO, and 300 Blackout. It’s ideal for stabilizing a wide range of bullet weights, typically from 55 to 77 grains. The 1:8 twist works with AR-15 barrels, upper receivers, and complete rifle or pistol builds, offering excellent versatility and accuracy for target shooting, hunting, and tactical applications.
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