Can I put custom skins in CSGO?

[kiyumii]

Basically that. If I put custom skins will I get banned?

[Maplezombiex]

yup

[kiyumii]

Yup what? I will get banned or I can do it safely?

[0 ping]

U will get banned

[kiyumii]

How sad, custom skins are way more fun than those in the game. Was fun to use back in 1.6 and source

[76561198948003106]

you are changing something in game so yeah you can get banned

[Klauß 🍔🍻]

You can edit any file you want when CS:GO is not running. No danger there. The game will tell you if you can't join servers because your files don't match the server's files.
Valve knows that data can get corrupt, they do not ban because a file doesn't match. A window will pop up telling you exactly which files aren't matching.

You could edit the vpk files to make the game load other models/textures, and then play local versus Bots with the command sv_pure 0. But you can not play on any other sv_pure 1 servers (all Valve official servers, most community servers).

edit: Yes, custom models/skins were awesome in 1.6 and source. Doesn't exist in CS:GO, we have the Weapon Cases and Collections and Souvenir Weapon Packages for that.