N/A Diana P-5 pistol?

Front sight detail, cut a groove in the shroud and a step in the sight blade for the two to fit together. The i.d. of the SS tube is 14mm. The o.d. of the sight body was 14.15mm so I had to file just a little off to get it to slide into the tube. Press fit was very tight. It’s not going to rotate!
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