can someone tell me what kind of mod this is

[wendysmanager24]

i recently quit smoking cigarettes a little over a month ago. i went to a vape shop and was like "i want something that can produce big clouds" (lol) and they sold me this for a lot of money. now i've leveled up a couple of times in terms of knowledge but the negative contact screw seems to be damaged somehow and i want to replace it.

the contacts are solid silver as far as i can tell. thanks

 

[inswva]

Looks like a Paragon V3 clone.

 

[Bad Ninja]

Like inswva said it's a clone of the Paragon mod.
Contacts are silver plated.
A copper replacement would work fine. You could buy the entire mod (clone) for about $20 online.