For sometime I have had a Pietta 1860 that I bought from Cabela's back in the 80's. The gun seemed a little dull and lackluster, used it a couple of times and put it up. After getting a Uberti 1860 which was a lively handling gun in the hand, I decided that the Pietta will become a project gun. The first thing I did was replace the barrel with a 51 44cal Navy barrel, creating a sort of hybrid. Then Pietta brought out the new improved 51 grip - so that became a must have. Then I thought - conversion! Had to have a Kirst. Then came all the hard hand fitting work, had to replace all of the innards. (Boy want a difference in quality between the new stuff and old). She is done. I may still get a spare 5" barrel in the future.