Tanks mechanics based on parent – child blueprint system. You can find the tank blueprints here: General\Blueprints\Machinery\Tank\Base

BP_TankBase is the parent blueprint class, the other two BPs are the child classes. 

Let’s open the BP_TankBase blueprint.

As you can see, our tanks based on child actor components system. For example, your tank can has two turrets, three tracks, etc.. Let’s take a look on the turret class.