Texture of upgraded weapons effect?

[slayer1]

It is in that folder, names are hard to guess but the +4 glow is the common weapon plus ptc, ill let you know when i can confirm more

 

Edit: a_Electric.tex is the lightning effects you get with +15 and higher

 

Edit: The cao files do not affect upgrade effects

 

Edit: Common_weapon_plus_ptc.tex does more than just +4, it also affects all other + s