They're frankenguns. They started as an 1851 Navy and the short barreled G&G I picked up a few months ago. Just swapped the barrels & cylinders. Now I have a pair of semi-authentic period pieces. I say semi, cause the Pietta grip frame & grips are not the proper shape for either one, and the S&G has a roll engraved cylinder. That will be replaced as soon as I find a blank one. I had posted on a couple forums that I had a lead on another of the short barreled G&Gs if anyone was interested. Delbert got the info; but I don;t know if he got it or not.