Can someone please clarify how I would make an R15 viewmodel?

I would like to make an R15 viewmodel in my game, but I have no idea how to do so/I've never messed with viewmodels before.

So far I have tried cloning the player's right upper/lower arm (and hand) and cloning the entire player's rig, both non-successful.

I need the viewmodel to be animated (or simply in sync with my actual player) and I want it to be parented to the camera so it looks relatively decent (not outside the camera)