Remington 870 24 fully rifled barrel features a cantilever base for optics in a satin black matte finish. Carlson's high quality fully rifled replacement barrels are made for 12ga Remington 870 and will fit both Wingmaster and Express models. These barrels are constructed from certified ordinance grade carbon steel. CARLSON�S rifled barrels have 3� chambers and broach cut rifling with a 1 in 26 twist. While testing these barrels we have had best accuracy with Sabot Slugs. Enhance the versatility and performance of your shotgun with a Carlson's fully rifled shotgun barrel that is proudly made in the USA!