1. Find where your PAYDAY 3 copy is installed. The location of this folder will vary depending on your installation preferences & storefront.

• Steam:
  

• Epic Games Launcher:
  

• GamePass:
  

2. Installation:

Mercury Mod Manager
If you have Mercury Mod Manager installed extract the contents into

.../PAYDAY3/Binaries/Win64/Modsor.../PAYDAY3/Binaries/WinGDK/Mods

Manual
If you don't use Mercury Mod Manager or prefer to just use the default UE4 pak mounting extract the contents and move the mod .pak file into

.../PAYDAY3/Content/Paks/~mods

. Create the folder if necessary.