Barrel for M1 Super 90

[BlackBuzzard]

Currently I use a M1 Benelli super 90 with rifle sights on the 18.5 in barrel.

I have a hankering for something longer, say 21 or 24 inches, with vented rib and interchangable chokes, which I could just pop on to my existing M1.

Is there a barrel made by Benelli that fits, or are there foregrip issues to be solved here?

Any online Benelli barrel sources to recommend?

Also, where do I get those foldup/folddown rear notch sights that some use on their vented rib barrels?

BlackBuzzard

[bigbrowndog]

The sights are normally taken from ruger 10-22's or similar and used for the conversion. the barrels can be found on gunbroker, numrich, gun shows, gunsamerica, etc. There was also a site called "barrel trader" or something like that.

Trapr