the slide on the USMC modified rear sight is different from a std 03, what was the hole dimension for the slide? and did there or was there any modification to the other part of the slide, the open V was it opened up more, when sighting in i almost think i need a larger aperture, I know since i changed out the front on my shooting 1903A3 scores went up at CMP and am shooting 289-293 range with Hornady ammo, the rifle has won senior division many times
I was able to obtain an original USMC front sight and I put it on a good shooting 1942 Remington 03, it shoots minute groups with lake city '68 ammo at 100 yards, with the original sights.