Carlson's high-quality accessory barrels are precision-crafted for Remington 870 models, offering an upgrade in performance and versatility. Made from certified ordinance-grade 4140 steel with chrome-lined bores, each barrel ensures long-lasting durability and reliability. Vent rib models feature a satin matte blue finish, a red fluorescent front sight and a brass center bead, while the 18-1/2 inches barrels are non-vent ribbed with a ramped front sight and matte finish. Each barrel includes a Carlson choke tube, crafted from 17-4 stainless steel, with rifled Choke Tubes made from 304 high-stress stainless steel. Threaded for the standard Rem Choke system, these barrels fit Remington 870 12 Gauge shotguns, bringing enhanced precision and adaptability to your shotgun setup.