Steam Powered Gatling Gun

thats a nice CS6 longshot behind it too, looking like a steampunk pulse rifle, i never figured out how to modify the single shot pump action attachment under the barrel

here's an idea, get a Rey star wars force awakens blaster, remove the grip, turn it upside down and add it under the barrel of an existing rifle ( such as a rayven with a barrel attachment or stryfe ) so you end up with a 4 shot pump action launcher attachment, yes?