As the title states Wilson Combat is now making custom grip modules for the P320 carry and full-size, I don't see any compacts listed. It looks like they will be 65.00.
https://shopwilsoncombat.com/Grip-Module-WC320-Carry-Standard-Safety-Black/productinfo/320-CSB/
https://shopwilsoncombat.com/Grip-Module-WC320-Carry-Standard-Safety-Black/productinfo/320-CSB/