This is a minor mod to the cool Ray Gun Blaster (http://www.thingiverse.com/thing:527114) that just fills in the ends of the tines in the body shell halves, to keep them from wobbling as much during printing.

Still a bit of a nuisance to print, I'm afraid, but for me it was hopeless before doing this.

I left them in after printing - still looks fine to me.

(BTW, I despite the photos, I did redo mine later with the barrel turned the right way round.)