Sounds very strange. Id delve a little deeper with your enquiry, the playstation blog maybe. With Arizona Sunshine launching, and it's no doubt popularity, you'd have thought the controller would have a 2nd wind in sales.
Sorry I can't be much help, felt compelled to reply because of what seems an odd situation. Unless Sony have got wind of some better 3rd party guns coming, seems weird they'd leave money on the table given the market for gun/shooter games on the psvr with an ever increasing user base.