Who told you it integrates with it?
It does not integrate out of the box, it is built on top of Epics VR Template though. That said, I have mentioned before that I will make a video tutorial showing how to integrate the two in the near future, but that will mostly be for its locomotion and climbing. The VR Expansion plugin’ grip methods are completely different from mine and you would basically have to rewrite Weapon Master to work with them. There is no way I could release Weapon Master if there was direct integration with VR Expansion Plugin, because that is Mitch’s thing.
This week is going to see a few tutorials come out. I will try and sneak that one it but it may be a while. Its going to be a long tutorial with lots of blueprint changing.