Actually I was reading last night and I think it was in "Muzzle Blasts" that 3 Samuel Hawkin's have been found that were orginally flint and still are. The author of the story, wrote that he wanted a flint Hawken, but he wanted to make it accurate to the Hawken style. When he built the gun back the the '70's there were no known original Hawken flint guns, so he made it in percussion. Now he said, there are three flint guns, that had been found.