Ah yes, the Fournicator from Postal 4: No Regerts.
"What's better than a double-barrel shotgun? A QUAD-barrel shotgun! It's just simple math."

• ICARUSLIV3S, Russian Overkill

So yeah, the Quadruple Barrel Shotgun, AKA "Fournicator" from Postal 4: No Regerts, completely with its own special reload animation, and 3 skins.👌

This model was ported from SFM workshop with permission granted:
https://steamcommunity.com/sharedfiles/filedetails/?id=2863888660

Includes:
weapons\quadbarrel.mdl

Credits :
Famix - Original creator of the SFM addon.
NeoLin - Porting to Garry’s Mod.