I'm from Portugal, and I have a Westley Richards "Monkey Tail", a caplock musket from 1867. But I have a problem: There's a piece that is broken, some kind of little tube (I think it was a tube where the soldiers put a percussion cap, I'm sorry, I don't know the name of it). I have an image of the tube, but not the broken one (below).
The little piece is broken, therefore, when the hammer goes down after I pull the trigger, it doesn't hit the broken part, because that little tube that was supposed to be there isn't.
So, my questions are: Is that piece replaceable? Where can I buy it online, ordering it from the US? Is it expensive?