I appreciate the help and and apologize for not being more clear. I am looking for a 21" or 24" smooth bore vent rib barrel with chokes. The tips you guys have provided have all been for slug barrels, or with rifle sights, etc.
If you stumble across one let me know, I am completely baffeled why Benelli apparently doesn't have any anywhere. They must assume we all will just go buy another bazillion dollar shotgun if we want to change the barrel to something shorter/longer/else...
Thanks anyway !