Walther PPQ .45 magazine question

[Dan-O]

There’s a couple vids on utube showing a gentleman running 15 round Remington RP45 mags in his .45 PPQ.

They seem to work in the vids, but he doesn’t show the mag inserted. Curious if anyone else has tried this? Wondering about the mag to frame fit.

 

[Shipwreck]

I'd go ask at the Walther Forum.... I don't know...