Rick's Portal Gun

So, for a while now I wanted a portal gun from “Rick and Morty”, because, let’s be real, who doesn’t?
I started searching Amazon to purchase one and to my surprise they weren’t any decent replicas, the one that Adult Swim endorses doesn’t look much like the one on the show. So, I focus on designs on Thingiverse. I found better results! In particular this guy https://www.thingiverse.com/thing:1045661. However, after downloading and printing the design I found that firs the parts where all combin