The versions of the M1 and M3 shotguns that are made with conventional sporting accessories are the ones that are commonly used for hunting. There is nothing that physically prevents any version of an M3 or M1 shotgun from being used for hunting, but if you were to look at, say, the marketing material for these firearms as they're sold in Canada, it is the sporting configuration of the shotgun that is generally advertised for use for hunting.
On December 6th, 2022. See this statement in context.