Knurling and chipped
 

Anybody know why the knurling on the magazine release is different then what is on the toggles and take down lever?

The mag release is square while the others are diamond shaped.

Also I see in Kenyons "Luger at Random" book that the sole remaining 45 cal test Luger has the "Million $ Chip" in the grip.

I'm a retired machinist and I can spend hours just looking at the machine work on these guns and wonder how they ever managed to do what they did with the machines of the day.

Jim,
Your questions are kind of out of the blue! About which magazine release and/or gun are you inquiring? It would help if you put your question in context or can provide some photos so that we have an idea how to respond. Sounds like you have a legitimate question, or questions, but I don't know where to start. Bear with me until I can sort it out :)!

I guess I was kind of shooting from the hip. On my 1920 Commercial and WW2 byf and the pictures I see in Kenyons book of the various models all the knurling on the magazine release is a square pattern and all the knurling on the take down lever and toggles is a diamond. If you look straight down on the knurling you'll see that the little points are square on the mag release and elongated on the other. I can try and send some pictures if this don't make sense.

On the chipped grips, it was a picture of the test 45 in Kenyons book that shows a common error.

Knurling pics
 

Here is a picture of what I'm talking about. I added the lines to show the direction of the knurl.

Anybody have an idea why they're different?

I'd think that it is accomplished by rotating the piece 90 degrees on one at more like 75-80 degrees ont he other. But just why? I have no idea.
dju