Benelli Replacement Barrels Carlson's high quality accessory shotgun barrels are made for Benelli® Supernova and Nova® models. All barrels are constructed from certified ordinance grade 4140 steel with chrome lined bores. Vent rib models have a satin matte blue finish with red fluorescent front sight and brass center bead. All 18 1/2" barrels are non vent ribbed and have a ramped front sight with an extra matte finish. Each barrel comes with a Carlson choke tube installed manufactured from 17-4 stainless steel except for the rifled choke tube models which are made from 304 high stress stainless steel. Enhance the versatility and performance of your shotgun with a Carlson's replacement shotgun barrel.