StrawHat
Member
Lee, this is the best photo I have at hand. I'll take a better one when I get home. I think this would be considered rounded from what I can see.
Lee is asking about the sight groove I believe. Most of the first shipment were the Model 1917 Commercial and had the square notch rear sight. Those built on the leftover WWI frames had the round notch rear sight.
Here is an image of the square rear sight.
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Kevin