1.16.5 Gun mod suggestion:
Currently we can’t choose a custom particle trail particle for specific guns. Adding this would be beneficial for any guns that don’t fire bullet-like ammo (flame thrower, goo gun, etc). Particle trail length and texture size modifiers would be beneficial as well. With the option to disable the particle trail.

Currently it doesn’t appear that the particle color modifier works? I’ve added a valid color value that I use when changing gun colors, so I know it’s a proper value.