How's this for steel and wood?

I acquired this from a friends estate the other day, I bugged him for it for years before he passed away, I was surprised to hear from his family the other day with a call saying come and get it , it's yours, if you want it. It's a naval salute cannon, I started the restoration process on it yesterday, and spent all day working on it today, I need a firing pin for it, if anyone knows where I can get one or have a set of prints so one can be made I would appreciate any information. Here are some pictures before and some work in progress pictures as well.