You might try the new MetaXR Interaction SDK. I have not tried it, but have been keeping my eye on it. The page only shows support for UE 5.4, but when you go to the Download page, it is version 77. Meta tends to keep their plugin versions in sync, so this ISDK is probably compatible with MetaXR plugin version 77, which is for UE 5.5.
I developed my own grab system in Blueprint prior to the Interaction SDK release. For example, mine implements a “pinch” gesture by simply tracking the index fingertip and thumb tip locations, and when they get close enough to each other, it calls a Grab event on the Pawn that works exactly like the controller-based grab, except located at the fingertip location. Here’s a snippet of code…
