Yes it quiets it way down. I’m glad I put a huggett on it, but the Donny koi is just as quiet and cheaper. When you take the airstream off if the adapter stays in it, heat it with a propane torch and the collar on the airstream will come off then heat the adapter and you can carefully grab it with pliers and twist it out. Then glue the collar back on the airstream. Buy a .25 moderator.