You will need to use the full-size EPS model opposed to this EPS Carry model. You will then need to use the Leupold DeltaPoint Pro adapter plate that can be purchased from Walther directly if you did not receive it with your PDP. You must modify the plate by removing the rear recoil lugs and shortening the front two lugs by milling or filing them down. The full-size EPS model can be found linked below:
https://www.opticsplanet.com/holosun-eps-enclosed-pistol-sight.html
first, the eps and eps carry use the exact same footprint, and it's not a modified delta point pro footprint. they use a modified rmsc footprint where the rear lugs are removed and the front lugs are shortened.
second, since they use the same footprint you can use either on any gun that you can either mount directly (like the sig p365) or get an adapter plate for (most optics ready handguns available today). on a micro compact (like the hellcat, p365, glock 43x, etc.) you'll likely want to use the eps carry. but on any full size/ regular contact handgun (glock 17/19 size) you can use either eps model. the eps carry will be about the same width as the side and won't hang off the sides much, if any at all on those full size guns. the regular eps will hang off the sides of the slide like most rmr sized optics, but you'll have a bigger window size to look through. it just comes down to personal preference there. but either will work. like I said, they both use the exact same footprint.
be careful what advise you take from these answers. apparently they aren't vetted at all and you could easily get a wrong answer. it's amazing to me how some people will give advice on things they know absolutely nothing about.
I’ll let you know soon, I’ve got the compact 4” pdp 2.0 and according to everything I’ve found this optic should fit without any modifications. You will Need to order the delta plate from Walther. They send one for free if you haven’t registered for one already. The eps carry I ordered will be arriving in a few weeks. I’ll do a review on here for the fit and any issues I encounter.