International Barrels 260 REM Carbon Pre-fit 1/8 Twist 5R Rifling Ruger RPR Pre-fit 22in Long 5/8-24 Muzzle Threads

International Barrels 260 REM Carbon Pre-fit 1/8 Twist 5R Rifling Ruger RPR Pre-fit 22in Long 5/8-24 Muzzle Threads. The process begins with a blank then layered with carbon and heat treated. During heat treating the carbon layers are spread out in a concentric fashion which causes the carbon to heat up uniformly. During the annealing process the carbon steel blends with the heat treated sub-micron fibers resulting in a greatly increased thermal efficiency. Finally the barrels are bead blasted heat treated and properly stressed to produce a match-grade laminar flow profile. In short the barrels are pre-fit for you meaning you just have to fire it. At the end of the process an o-ring is melted into the carbon steel which holds the bore open for a clean easy break in. The blanks are then buffed smooth and satin finished. The result is a high performance barrel that punches through the competition. Specifications for International Barrels 260 REM Carbon Pre-fit Rifle Barrels - Threaded: Manufacturer: International Barrels Cartridge: .260 Remington Barrel Length: 22 in Barrel Twist Rate: 1-8 Threads per Inch: 5/8x24 Barrel Shank Diameter: 0.92 in Rifling Profile: 5R Rifling Fabric/Material: Carbon Package Contents: International Barrels 260 REM Carbon Pre-fit Rifle Barrels - Threaded International Barrels 19502: 260 REM Carbon Pre-fit 1/8 Twist 5R Rifling Ruger RPR Pre-fit 22in Long 5/8-24 Muzzle Threads