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This will show you how to extract Garry’s Mod Addon-Files (gma-files) for using them in 3D tools.
The GMA file format is a package format. It contains the Garrys Mod game content (materials and models). You get this file when you subscribe an addon from Garry’s Mod.
Location of GMA-Files
You'll find this files by default in: C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\addons
Tool for extracting a GMA-File
First – you don’t need a thirdparty tool to unpack a GMA file. The extraction tool is a part of the Garry’s Mod game installation: gmad.exe Create a shortcut to the tool gmad.exe, found (by default) in C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\bin
Unpack a GMA-File
Step 1: Create a new folder Step 2: Find the addon you want to extract and copy the gma-file in your folder Step 3: Drag the gma file on your gmad.exe shortcut. A command prompt run and the selected addon file should be extracted in a new folder, with the name of the extracted workshop addon.
Now you can decompile the model-files (found in the folder ‚models‘) and import them in a 3D-tool of your choice.