Credits: Four Worlds Studios
I reckon it is best to be played in some form of multiplayer game with others. There is not much you can do in singleplayer aside from having fun shooting. By the way, only two guns with several modifications will be available as of now. The possible mods could include an increased magazine size, a scope, a suppressor, or a grip. I must also warn you that this addon uses player.json, so it may not be compatible with some other addons.
Don't forget to activate the Experimental gameplay toggles in Settings.
Edited: 2.05.23
Reason: Added 1.19.73 Support!