In this case, the seller attributes Jacob Fordney by name, which the other seller did not. We note that Jacob had a contract to supply rifles for the tribes to the US Government in 1837. However, I'm not totally convinced that this original (as shown in post #17) is one of them. I suppose there might have been some variation among the rifles he supplied, but images of the ones I have seen show full octagon barrels and patchboxes. I think it is possible that this original may have been restocked around a Fordney barrel, although you would not necessarily expect a checkered wrist, a Late Lancaster characteristic, from a frontier gunsmith, although the existence of re-stocked rifles is well documented.
I don't want to hijack this thread! Maybe I already did, in which case, I apologize. The ultimate point was that The Crisco Kid's "recreation" would have been right at home on the western frontier.