The Carlson's Modified .720 Choke Tube is precision-engineered from 17-4 stainless steel for superior performance in Browning Invector-Plus 12 gauge shotguns. Features a 25% larger parallel section that delivers more consistent patterns than conventional choke tubes.Carlson's Modified Sporting Clays Choke Tube (.720 constriction)17-4 stainless steel construction with precision machining25% larger parallel section for improved pattern consistencyKnurled end for quick and easy installation/removalLaser-marked constriction for easy identificationCompatible with lead steel copper-plated nickel Hevi-Shot and buck shotFits all Browning Invector-Plus 12 gauge systemsLifetime warranty includedIdeal for sporting clays and hunting applications where moderate constriction is needed. Delivers tighter denser patterns than flush mount choke tubes thanks to the extended parallel section design.