Crazy Devy, responsible for numerous Devastator upgrade sets and gilded Predaking wings, have revealed their next Superion set will consist not only of Superion’s chest piece, but his gun as well. An early picture, later removed, on the Crazy Devy site showed off the gun, it is now officially confirmed by them to be a part of the CDMW-13 set.
Whether or not you’d consider the rifle to be animation accurate is up for debate, it’s the right kind of size for Superion, but Superion’s weapon was arm mounted in the cartoon series.
Remember also this is an unofficial third party product and is not officially endorsed by Hasbro or Takara-Tomy. It’s an adult collectible and should not be given to children under 16.