I went back and found the video of the very fine gentleman talking about the Hawken gun. I have to apologise for saying he said the barrel was never removed, because after listening to him again, I am unsure if he was saying the escutcheons were never removed, the keys were never removed, or both. I assumed he meant the keys, which would have meant the barrel was never removed. I don't know why he would make a point of saying the escutcheons were never removed, because why would they be? So, I may have assumed incorrectly that he meant the keys, which would have meant the barrel was never removed. He seems a very nice person, and I'm certain he's more knowledgeable than I. Here's the video and his extemporaneous talk with the comment at 9:50. I still would appreciate anyone who knows about the Jacob and Samuel Hawken ignition channel.