M1Super 90 barrel compatibility

[Kingyoda58]

I own an older tactical HK/Benelli M1Super 90 shotgun with a 18” barrel. I love the weapon but would like to use this platform for dove shooting. Obviously a 18” barrel isn’t quite enough. What choked barrels are comparable with my older receiver?

Thanks in advance.

[Bravo2]

How about leave it as is and pick up a new m1 super 90. I know where 2-4 are. The new version of the old they made in 2018.