Dude, I don't know what you are cooking, but I couldn't reproduce the crash on my end; I suspect you've got a huge stack of different mods that are barely compatible with each other.
The problem is likely the combination as a whole. I tried to come up with a workaround to fix it, but I can't even verify if the fix works because the issue almost certainly stems from the specific combination of mods:
Voidcraft + Arcanyx + K2SO Realistic Weapons + Rigor + K2 Arsenal + Something else.
And I'm not even sure about it, because I play with the Rigor mod separately myself. Anyway, I did the fix, let me know if that helped.