Ithaca M37 Vietnam Trench?

[browningautorifle]

Could it be a needful conversion from a field gun? It won't have a full choke anyway, just a full choke barrel cut off. Unless you've tried to slip a dime in and it's closed up? I think you'll find it's cylinder bore.

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[K98kG43]

Unless you've tried to slip a dime in and it's closed up?

I'm not much of an expert on shotguns so thanks for the tip Jim! Never heard that trick before. Anyway, I put the Dime on and it wont go in, pretty sure it started life as a short barrel, has the hole plugged with a black material where the front sight should be, just like my 1897 Trench. Think this was a riot barrel that someone put a heat shield on later? Did they make Full choke Riots? Whoever did it did so a decent amount of time ago as the parkerizing has, I'd call it "browned" together and wear areas. I don't know. Weird piece. And this serial # set around 1967 seems to be " lost" at Ithaca.

[browningautorifle]

I put the Dime on and it wont go in,

Wow...that's new. I very much doubt it's a military gun still. Riot barrels should be a cylinder bore. There are a few guys around here that can shed light, Tom Doniphon being one. They'll be along anyway.

Here's another place to ask... 1942 M37 Riot gun questions | Shotgun Forum