So I fixed the aperture plate on my 1901 rear sight. someone had messed with the sight. The little metal plate with the aperture was on the upward side of the slide and not the lower side where it belongs.

The slide is made up of at least two plates that interlock and, despite my best efforts I could not separate them so as to put the little plate back in place where it goes.

I gambled. I used judicial force. I got lucky, I did not destroy anything. I removed the screw on the left hand side of the slide. I inserted a screw driver on the left hand side of the slide where the two halves join and ever so gently pried them apart. The little plate with the aperture finally popped into place, replaced the screw, done. Fixed. Was I lucky? Damned straight I was, this could have gone very badly. I could have bent or destroyed the slide. I'd bet dollars to donuts this was the wrong way to achieve my goal.

I have a bent knob on a 1898 rifle also, I have a replacement, but have not not yet tried to repair it. You gave me inspiration to take another look at it.

Thanks