Bsf Barrels Pre-Fit Features The Bsf Barrels Pre-Fit starts life as a turned-down 416R stainless steel match barrel before being jacketed in a roll-wrapped carbon fiber sleeve loaded under tension. This jacketing method avoids the heat-trapping and delamination issues associated with simply wrapping a barrel in carbon fiber since the carbon fiber used is specially engineered to expand at the same rate as the stainless steel beneath it. Built as a pre-fit specifically for the Zermatt Arms Origin and Aero Solus actions the barrel threads on without requiring a gunsmith to perform custom chambering or fitting work. A 1:8 twist rate is matched to the heavier higher ballistic coefficient bullets that 6.5 PRC shooters typically favor for long-range work. The 22 button rifled barrel carries a 5/8x24 thread pattern for muzzle device compatibility and is built as a non-ported design keeping the barrel s profile clean and consistent along its length. Because the carbon fiber sleeve is under tension the barrel holds its rifling straighter as it heats up during a string of fire an advantage for precision shooters stacking multiple rounds at distance. At 41 oz the Pre-Fit is considerably lighter than an equivalent all-steel barrel helping keep an already precision-focused rifle build from becoming front-heavy. The Bsf Barrels Pre-Fit is available for sale at GrabAGun for 6.5 PRC shooters running a Zermatt Arms Origin or Aero Solus action. BSF Barrels Pre-Fit Specifications Manufacturer: BSF Barrels Model: Pre-Fit Caliber: 6.5 PRC Action: Bolt Barrel Finish: Carbon Fiber Barrel Material: Stainless Steel Barrel Type: Not Ported Twist: 1:8 Diameter: .936 Thread Pattern: 5/8x24 Barrel Description: Button Rifled Barrel Length: 22 Weight: 41 oz Compatible Hosts: Zermatt Arms Origin Aero Solus Available At: GrabAGun