I don't think so, to me it looks more like a self cocking chassepot

the mauser brothers were working for the remington agent norris since 1868 in Liege on different projects. the most important was to modified the 1866 chassepot into self cocking and for metallic cartridges. this results in the end in the german mauser 71 model.
the DNA of the chassepot is to find in the mauser action.

the snider cartridge rifle looks to me like another pre 1870 trial.