Back in January, the devs of GMOD changed the framework of addons (or something else idk), so previous ways of converting assets over don't work on newer addons. Just wanted to write a small guide to let people know how to do it.

This is the most straightforward one.

{LINK REMOVED}https://steamworkshopdownloader.io/

This site is simple to use, mostly self explanatory.

PROS:
It's quick
Converts .gma files automatically

CONS:
Site is glitchy and can't download large file sizes

Make sure you have GMAD installed somewhere.

I think old addons might still work the same, so the old method might still work?

Here is a prop pack that works in SFM that I wholeheartedly recommend and will be using as an example:
(Filesize: 1GB)
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2061367142

You can use any recent addon if you want instead.

Anyways, download and start up GMOD and make sure its installed.

Then, start up GMAD.

You will need to find the workshop folder. If you installed steam regularly, it should be:

Program Files (x86)\Steam\steamapps\workshop\content\4000

You might see a ton of confusing numbers, but don't worry, none of those matter, except for one. The number you're looking for matches exactly as the addon ID on the workshop, so: 2061367142

Inside the folder should be "bo_vehicles_2020.gma", and then extract the model and material files to a directory in your SFM installation.

EZ PZ.