Thanks for your note there too-

I have liquid nitrogen here, that migh just do the trick!
Good point with the spare sight too.

I'll be making the new sight.
The process is essentially like this...
Take a piece of steel stock and profile it to the shape of the current front sight, only slightly larger in most dimensions -- and however much taller it needs to be
Then cut a piece of the profiled stock to length, just a tad long
Then hand finish the profile, bringing the surface to the desired finish and the dovetail to the proper fit
Then notch for the plat or silver bead face and braze the precious metal in place, drill and counterbore for the set screw, bevel the bead face, black the steel, card and finish the steel and lap the face of the bead to a mirror finish.

Install and shoot.

Add the flip night sight feature somewhere in the process if it's getting a flip bead.

Making the profiled stock twice (or three, four... times) as long as necessary is the same bit of work as making it just the right length.

--Tinker