Hi Christopher and welcome back. The actual Optics Cut is proprietary so you will need an Optics Plate to Mount most Red/Green Dots. This Guide will help you select the best Red/Green Dot for your needs. RMR is most popular: https://freedomgorilla.com/blogs/news/best-walther-pdp-f-series-holosun-red-green-dot-sights-adapter-plates?collection ----------- Cheers, stay safe and enjoy! ****NOTE**** The Holosun SCS PDP will mount direct without a plate: https://holosun.com/products/reflex-sight/scs/scs-pdp-(pdp-2.0-only).html

Hi Christopher, yes this is the PDP F-Series Pro. To mount an optic, the correct mounting plate is availa-
ble through Walther Arms Inc. Customer Service. Your
first optic mount base is complimentary. Please order the correct mount base: Docter Mount Base (01), Trijicon Mount Base (02), Leupold Mount Base (04).
You can request your optics plate here >>> https://waltherarms.com/optic-plate-request-form-1
Stay safe & have a great day!