I just spoke to them. They are very nice. They don't know if you can bring your own gun. They said that if you email them at
[email protected] they will find someone who can speak english and who can correspond with you.
If I were you, I'd do do this, rather than rely on what a clerk at a desk in Los Angeles says. Italy is a very regional place, and you really never know. I told them that you want to participate in the championship, and they said they will get someone who speaks english to answer all of your questions by email, and to help you out.
PS: They also said to feel free to call them on their cell at +393356842966. They don't speak english, but said that if you call during the day time they will find someone who can.