You know that when Ithaca made that gun they had a lifetime guarantee on 'em. For a gun with so many problems that in itself would have made them go broke. The part you are needing was one of the problems along with the shell latches. Made way too lightly. Shell latches bent easily and the bolt carrier would crack in 2 places. When they worked they were nice shooting guns. I had one in skeet version with an extra full choke trap bbl. Drop dead gorgeous wood. Pretty pretty gun...but it was always broken.
I'll see what I may have in parts. Knew a guy that made parts for them ..more robust but think he died a year or so ago. Think the gas system had a prob too but don't remember what exactly.
The Red letter M-37 is a nice gun . A lot of them were and are used for block or target shooting guns. Kick a little though.
