FPS Hands and a Gun with Oculus controllers

Hi, is anybody here who has experience with "FPS Hands and a Gun: https://assetstore.unity.com/packages/3d/props/guns/fps-hands-and-a-gun-93242" and would know how to connect the model to Oculus controllers?
The models structure and system doesn't seem to be so easily usable for this purpose, or maybe I'm wrong?