hi Kim, The rings i refer to are the compression rings that are located on the magazine tube. There are several rings and a spring in that location. as i remember, they should be changed from one location to another depending on what kind of ammo you using.ie. trap load of heavy goose or duck load. High brass or low brass shells.
Thanks for your come back
hi ace,
i'm not really sure and would hate to guess at answering your question, try this site, they should be able to help. http://www.shotgunworld.com/links.html
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