Depends how anal you are. Any figures in Bell top shako and shell jacket will probably pass as Marines, although Perry do some. Albert shakos which were worn by the time of the First Sikh War won't really do. Peaked forage caps in the time period of the Carlist War were only authorised for officers or for men on hot weather stations like India and it was a local adaption, not universal. The Foundry First China War range are a somewhat better fit.