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I don't think any of them were made by CVA and as far as that goes CVA didn't make anything. They imported their stuff. That third one down was made by Classic Arms but the grip has had some extensive modifying done to it. The 45-70 "flintlock" definitely looks like a movie prop. I'd have to shoot that thing.
That bottom one looks like a highly modified Springfield rifle. It has fake flintlock parts added to it to look like a flintlock. My guess is that it's made to look like one for a movie, but left as a cartridge gun to make it easier to load, so the armorer for the movie didn't have to fool around with loose ball and powder. Just my thoughts.