Note: there's only one STL for the fangs, but it should be printed once as is and once as a mirror image on any axis. Let me know in the comments if you would like me to upload an already mirrored STL.
You have a choice of printing the main part as two pieces + two joining rods or as a single piece. The single piece requires a maximum print height of at least 250mm. The photos are of the single print version, but I have also tested the split version and all the models have been verified to print well on my Creality Ender 3.
For the red screen overlay, you can just cut some translucent red plastic and slide it in place or I have uploaded two choices: a box that can be printed in vase mode and cut up to form four display overlays or a model that you print normally and then cut to size to make one display overhead. I used red translucent PETG for the displays and silver and gold PLA for the other parts. The gold color inserts snap into place, but will come loose if you hit something, so I recommend heat-welding, glueing or using double sided tape to hold them in place.
You could probably print one weapon in about 4 hours, but for best quality (I used 0.1mm layer height), you'll need about 10 hours on a typical FDM printer.