Bsf Barrels Barrel Features The Bsf Barrels Barrel pairs a 416R stainless steel match barrel with a carbon fiber jacket applied under tension a method chosen specifically to avoid the heat trapping and delamination that plagues barrels wrapped directly in carbon fiber. The carbon fiber itself is engineered to expand at the same rate as the stainless steel beneath it so the jacket and the barrel move together as temperature climbs rather than working against each other. Slots machined into the carbon fiber let air circulate around the barrel venting heat faster and helping the rifling stay straighter during strings of fire that would otherwise cause a bare steel barrel to walk its point of impact. Chambered in .22 ARC with an 18 length and a 1:7 twist rate this barrel is matched to the fast efficient cartridge it is cut for. Built for the AR-15 platform this button rifled barrel carries a 5/8x24 threaded muzzle ready for a brake compensator or suppressor and a .875 gas block diameter that fits standard AR furniture. The tensioned carbon fiber construction keeps overall weight down considerably compared to an equivalent steel profile which matters on a rifle carried all day in the field or run hard through a match. Because the barrel remains stiff and stable even as it heats up shooters get consistent accuracy shot after shot rather than the degradation typical of thinner steel barrels under sustained fire. This Bsf Barrels .22 ARC barrel is available for sale at GrabAGun for builders looking to upgrade an existing AR-15 upper. BSF Barrels Barrel Specifications Manufacturer: BSF Barrels Caliber: .22 ARC Barrel Length: 18 Gun Platform: AR-15 Barrel Finish: Carbon Fiber Barrel Material: Stainless Steel Barrel Description: Button Rifled Twist Rate: 1:7 Diameter: .875 Grooves: 6 Thread Pattern: 5/8x24 Available At: GrabAGun