I like to shoot my Remington M1917 with either cast or jacketed bullets. Problem is that I have to shift the front sight .030" left to correct windage when shooting cast. I know that Parker Hale made a target sight for the P14/M1917. The 5B model. But those can be pricey when you find them for sale. They also have a lot more vertical and horizontal adjustment than I need.
So I'm designing my own adjustable rear sight that can be installed without altering the M1917. It's almost done. Here's a couple pics. The sight has about .040" windage adjustment L or R and is adjusted by turning a screw. Lowest elevation matches the lowest ladder setting. Highest elevation matches the 800 yd ladder setting. My plan is to make the elevation adjustable by turning a screw. Right now elevation is held by the aperture clamping the sight base.
The base is made from standard aluminum U-channel. The aperture threads into another piece of standard aluminum.