Authentic Gameplay Modification for ARMA 3 - ModDB

The Authentic Gameplay Modification (AGM) aims to provide the most authentic gameplay possible in Arma 3, without sacrificing playability. It is completely open-source and modular.

2035 Russian Armed Forces, new update (4.0.1) released! : r/arma

The Halo Mod for Arma 3 has been out for a few days now.. : r/gaming

Authentic Gameplay Modification for ARMA 3 - ModDB

Steam Workshop::Gunter's gameplay mod compilation list

Authentic Gameplay Modification - ARMA 3 - ADDONS & MODS: COMPLETE

Arma 3 Mod Makes The Game Even More Realistic

Arma III: Operation TREBUCHET (Halo Mod) - Apex Hosting

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Arma 3: Most Immersive Mods