The Proof Research Carbon Fiber Sendero Light Barrel combines lightweight construction with precision performance in .284 caliber with a 22-inch length and 1:8.4 twist rate.Proof Research 22" Carbon Fiber Sendero Light Barrel.284 caliber chambering for versatile long-range applications1:8.4 twist rate optimized for heavy bulletsSendero Light contour balances weight and rigidityCarbon fiber construction reduces weight while maintaining accuracyDesigned for bolt-action rifle platformsIdeal for precision rifle builds long-range hunting and competitive shooting where weight reduction and accuracy are paramount.