Cool Sprue ! Thanks- I look for these all the time ,I have the Blunderbus ,got for 10$ off ebay They are worth the effort as you can see. And as stated they can be made to work ,that is to say the trigger is pulled and the flint travels down and strikes!
I also added a steel rod for balance and weight ,do one of these and take it to an IPMS meeting and watch the crowd gather!