How do I create a dual wield weapon with animatable parts?

So currently my head is twisted on how to allow this model I created for a project to be animatable in blender and export it to roblox as a dual wielded weapon with individually animated fingers without exporting every single meshpart into roblox, rigging and animating it in studio. Should I keep the meshparts separated, combined? I want the fists to work with any R6 Animation.