Garry's Mod 9 : Garry Newman : Free Download, Borrow, and Streaming : Internet Archive

Garry's Mod 9.0.4 [Garry's Mod 9] [Mods]

Garry's Mod Review for Teachers

Steam Community :: Guide :: How to Garry's Mod

How To Get Gmod For FREE!!! (2018)

Garrys Mod PC Game Multiplayer Free Download

Garry's Mod for PC Game Steam Key Region Free

Garrys Mod Free Download

Garry's Mod - Custom Game Cover by LucasDash-dA on DeviantArt

Garry's Mod (Beta) On Steampipe: Experimental Linux Support

I found out that you can download Garry's Mod 10, 11 or 12 for free if you own the current version in your Steam Library. Fired up Gmod 10 and made this. : r/gmod