I have a question. I am looking at a Taylors uberti 1873 cattleman, I have had 3 in the past. this one is an on line auction. it has a small screw in the top of the hammer in the middle of the curve. it must have something to do with a safety feature, I have never seen one like it before. what is it? can the hammer be replaced to get rid of it? thanks for the help,,,,,,,,,,,,,