Kevin didn't have a weapon design for me to use going into drawing the group picture, so I made one for him.

This took some time to make, because my mind couldn't get off the logistical problems a bubble dragon (three fingers on each hand and no thumbs) might face with a firearm, which he wanted.
The solution was simple: instead of a standard pistol or rifle grip, just make the entire trigger a lever.
From there, it went from a magitech pistol to a magitech railgun/sniper. It may not look very magical, but I'm sure someone more competent than me can expand upon that aspect further.