Ok, front sight options.
I no longer can use a black serrated front because: reasons.
I tried a couple attempts at painting (orange paint pen, Testor's white enamel) but neither product worked well. They both pooled heavily in the sight crevices, and I was not happy with the job, despite using my extremely fine detail brush. As I was cleaning the paint off the sight, I noticed that the hex screw simply unscrews, leaving the sight in my hand. Well. I don't know why it never occurred to me to simply take the sight off and find an aftermarket option, but here I am.
I've tried FOs and they don't work for me for what I want. I usually opt for Ameriglo's with an orange ring (the glow vial embedded is cool but not really necessary). But Ameriglo doesn't make sights for Ruger 22/45s. Dawson has FO, and standard black options, but no "ring" night sights. Same for Volquartsen or Tandemkross; they don't really have an option that works for me.
Ideally I'd like something like the orange one on the left in the picture below (this is the Ameriglo I my on both my P365 slides):
Anyone have a line on a Ruger Mk IV front sight like this? I'll keep looking obviously, if I find what I'm looking for I'll post back.