HK M1 Super 90 Choke type in Benelli Posted July 12, 2020 Back in the 80's there was a different choke. It was like a Franchoke but was not the Franchoke. It had an interrupted thread so the top of the choke had no threads for about 3/16". I know either Carlsons or Briley make a special run of these older style chokes about once a year. You could call and find out. Maybe someone on here has a very old Benelli they could post a picture of their old choke tube for you.