Remington 870 Express OEM Shotgun Barrel 12 Gauge 18.5 Bead Sight CYL – R24620. New Remington factory barrel, 12ga 18.5 Cylinder Bore in a black matte finish. Chambered for up to 3 shells. The Cylinder Bore is an open choke and often called Police Choke or Riot Choke. It is prefect for home defense weapons and the matte finish will match the finish on your 870 Express and often confused with parkerizing as it is designed to look like parkerizing. Replacement or spare barrel.