Any experience with the FX Royale laminate black pepper stock?

That stock came with my Dads 500 Royale (.25)
He loves it and so far has had no issue with it. He leaves it propped up near the sliding glass door which is upstairs with a deck. That's his primary shooting spot. 
He shoots nearly daily and up to this point he says it's the finest Air Gun he's ever used. I've not held the Walnut version but this version is light, surprisingly so.

Mike