What type of threaded choke tubes used in 1984 model 37?

The 1984 Model 37 shotgun typically used Win-Choke threaded choke tubes. These interchangeable chokes allowed shooters to easily modify their shotgun's performance for different shooting conditions, such as hunting or target shooting. The Win-Choke system offered a variety of constrictions, including cylinder, improved cylinder, modified, improved modified, and full, giving users flexibility in their shooting applications.