The Daniel Defense 10.3-inch 300 Blackout barrel features premium hammer-forged construction with a 1:8 twist rate and pistol-length gas system designed specifically for AR-15/M16 platforms.Daniel Defense 10.3" AR-15 Barrel300 Blackout (.300 BLK) chambering1:8 twist rate for optimal bullet stabilizationPistol-length gas systemS2W hammer-forged constructionCompatible with AR-15/M16 platformsEngineered for precision and reliability this barrel is ideal for compact AR-15 builds requiring superior accuracy and performance with 300 Blackout ammunition.