Rye Miles posted a topic about the new Guns of the Old West magazine and how they featured the Thuer conversion. Then Sedalia Dave posted a Lost Guns episode on an 1849 Colt with the Thuer conversion. If you are not familiar with the Thuer then you should watch that video. I'll post that again at the end of this post.
About 20 years ago Uberti made a handful of Thuers, very few actually. Well, Cimarron has one of them. For a time there was a consideration for Uberti to put it into production, but it never happened. Too niche, I guess. But Cimarron took the Thuer to a couple of Shot