Extreme Ghostbusters Proton Pack

I worked this up and have left it back burnered for a while, doing some housekeeping and thought I would throw it up here, I loved Extreme Ghostbusters so hopefully you like my take on their Proton Packs.

I tried to scale this but I think it makes most of the parts a bit big for most printers, I haven't tried printing it or anything as of yet tho so if you do let me know how it works.

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Update 1.1: I uploaded individual files instead of the all in one, and made sure there was a proper socket for the cartridge to sit in the gun.