The fhss has a hinged floor plate and accu-stock. The fcss model has a removable clip and accu-stock if a detachable mag was something you wanted to have, otherwise the same as the fhss. The bottom of the magazine of the fcss is metal compared to the plastic/polymer mag in the trophy hunter. The fcss/fhss has a different barrel finish than the trophy hunter as well. The trophy hunter appears to have a spray on finish which is more of a matte look whereas the fcss/fhss is normal stainless finish.