Looks like they dusted off a gas delayed blowback design. Breech isn’t locked.
I’m not going to disparage. It worked with the P7 but I can see where the gas timing could be affected by lower pressure loads or heavy bullet weights. I’m postulating, but slow powders could also be a problem. Regardless, a lot of heat and fouling is going to be trapped in the frame.
I’d try and find a range that has one for rent.
A few years ago, Remington dusted off an old Pederson tilting block design and adapted it to 9mm with the R51. They executed poorly and the pistol was a bear to field strip. Walther isn’t Remington so I’d also be interested to hear from someone with 1st hand knowledge.
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