Standard 12ga. Extended Choke Tube. Whether shooting clays, hunting waterfowl or woodland game, we have just the standard choke to suit your needs. These standard extended choke tubes features a matte blued finish, and are available in Cylinder, Improved Cylinder, Modified, Improved Modified and Full pattern constriction. Will fit? all Franchi 12 gauge shotguns that utilize standard Franchi chokes. Franchi Shotguns Franchi Choke Tube Extended - Cylinder Black 12 50991P