The rear sight designs are completely different, but they do use the same screw holes in the receiver (albeit different screw heights).
I just bought a 1902 rear sight to put on my 1896 carbine because it shoots 2" to the right at 50 yards, and the early model sights have no windage adjustment.
I've also been having issues with the front sight because the previous owner had aftermarket Lyman sights installed. I know why he sold it.
Stupid thing shot 1' low at 50 yards when I first got it home.
I've been trying to get it right for a year and a half.
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