Contains four mods that change Walker and one that replaces all of Delta Force, along with one SRGame file that changes Lugo's hat.
To install any of the squad replacement mods, place their folder in Steam\steamapps\common\SpecOps_TheLine\SRGame\DLC\PCConsole\DLC1.
To uninstall any of the squad replacement mods, just delete their folder from the game files.
The Beta Kastavin and Riggs mod should be used alongside the "Cowboy Hat replaces Lugo's Hat" SRGame.upk file. Back up the original SRGame.upk file in Steam\steamapps\common\SpecOps_TheLine\SRGame\CookedPCConsole and place the new one in there. When you want Lugo's hat back, either replace the modded SRGame.upk file with the original or verify the game's files on Steam.
Special thanks to devildwarf for sending me the rigged Beta Elite model and first modified UPK file for that mod!