Looks like this might be a steel frame revolver. If that is the case it is worth a little extra effort to get it right. You could purchase a new cylinder for somewhere around fifty bucks and if that is the actual problem you would save yourself a lot of headaches. Do some homework before going that route.
If it is brass, I would not put a lot of money into it. You could part it out and make enough on it to buy yourself a good used but good condition revolver.
My reading of history convinces me that most bad government results from too much government. Thomas Jefferson