Overall views would have been a lot more helpful...it's hard to get any sense of proportion from closeups. It is a French carbine although difficult to tell from those pictures whether for Dragoons, Cavalry or Hussars (they all had different patterns). The position of the front band is likely correct. I don't think it's M1777 but, more likely, either the Model of the Years 9 or 13 (according to the French Revolutionary Calendar).