For sale is a BNIB X-Claiber 6mm ARC barrel. Barrel is 14” in length, 5/8x24 threaded, 416R SS bead blasted. Twist rate is 1:7.5. .750”gas block. Profile is their LW(Muzzle diameter is .7). I am selling it with an Aero Gas black and nitrided gas tubes. The handguard is a 12”(12.4”) Centurion Arms CMR Gen1. Next up is a Centurion Arms 12”. $300 altogether shipped.