This fan design is meant to be a predecessor to the Mark II. Its description follows >> The Mark II medium repeating blaster cannon was a blaster cannon manufactured by Merr-Sonn Munitions, Inc., and was one of the weapons used to defend the Rebel Alliance's Echo Base from invading Imperial forces during the Battle of Hoth.
this fan design looks amazing :D
Totally agree! This was one of the things that drew me to the mod back when it was popular.