Help Id A Benelli Choke

[chp5]

I recently bought an M1S90 with a ribbed barrel that was cut down to 21" and rethreaded. It came with only one choke - improved cylinder.

Because it's a cut down barrel, this has to be a thin walled choke, but I can't tell the manufacturer. The only writing on the choke is "IC" for improved cylinder.

I know it's not a Briley because their chokes are threaded toward the muzzle - this is not.

Any idea who made this? Thanks.

[benny hill]

looks like a tru-choke

[chp5]

Thanks Benny.