This work in any source engine game, not only gmod
Learn more about jigglebones:
https://developer.valvesoftware.com/wiki/$jigglebone
Proportion Trick Tutorial:
https://youtu.be/n9lmxpjSv0I?si=fuR7ZaoAF1bVaSxj
Jigglebone QC Reference
https://pastebin.com/mHqxvt3S
