British percussion carbine

[fernando]

Nice piece.
Would that be a musket with a barrel shortened to a carbine length ?
Perhaps a private conversion for non military use. A few things don't seem to square: only one ranmrod pipe, a misplaced belt sling ...
Could you check if the ramrod swivel looks like having been added at a later date?
Mind you, these are all guesses; other members here know a lot more about this.