I didn't see the gun, but I know it had been there.
I was going through a bag of mixed range brass when I saw the characteristic stripe mark of a fluted chamber.
But wait! It's a .40!
I know of a few P7s around here and even a couple of privately held MP5s.
But I have only seen a P7M10 at an out of town gun show and an MP5/40 not at all.
But there's got to be one somewhere around.