AW pic rails were permanently attached at the factory when built to order.
The rails are epoxied then pinned to the receiver. You can’t buy one and even if you could, you can’t have it pinned on. Getting a gunsmith to #### around with it.....yikes.
Your best option is the SPUHR AI dovetail scope mount or the AI dovetail scope mount.
The AI dovetail is actually a very strong and repeatable mounting system, no need for a pic rail unless you need to be able to mount NV or thermal optics.