I'm not knocking Rossi, and their recent revolver based carbines.
But if you already have the trigger, and/or hammer, to rotate the cylinder, why would you need a lever??
I recently saw this on another forum, and thought it was Photoshopped, but its real. Photo is linked from Rossi's site.
I do give them credit for the 3" chamber. Unlike that Winchester 9410 that only took 2 1/2" shells.