Unfortunately, my 507c doesn't co-witness with the BUIS. I had to order Ameriglo suppressor heights (GL611s are on for me with 115gr Speer).
I spoke with Walther today and they will have optic plates available for purchase "within 2 weeks."
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My SRO/RMR/Holosun plate arrived from Walther today — that was quick. What screws do I use to secure the plate to the slide?
The PDP optics cut really mounts the optic down low.
Attachment 68242
Attachment 68243
I tried a Canik 20, a MecGar 18 with their factory plus two extension, and it snapped into place perfectly in my PDP.
Hit the range with it this morning. Went to zero the SRO, fired a shot at 15 yards, fired a second and couldn’t see it. Went to the target, and both were in the same hole. I did not have time to do formal 25 yard testing, but in zeroing and some casual shooting, this thing is a tack driver.
I didn’t have a holster, so I did some table starts shooting steel and a partial paper to get a feel, and this gun is very easy to shoot. Walther appears to have a real winner here.
https://youtu.be/4uK-fLnb26U
CHPWS has PDP plates on the website.