Anyway to retrieve the model of a VR headset?

I want to use controller models, instead of hands, for my menu. Is it possible to get the brand/model of the headset so I can display the correct controllers?

You can’t specifically check to see what model is being used, however, you can see the screen size like from this post:

Damn, that sucks. I wonder if the screen size reflects the headset screen size, so I can use that to check what model it is.

Your best option may be to ask the player what controllers they’re using when they join. Some people use controllers that don’t necessarily match the headset; eg. using Index Knuckles with a Vive headset, and as mentioned before there’s no method for developers to see what those are.