Ok Brent not sure what lollipop sights have to do with this thread
Only to try to make the point that it was not a backup system that I was talking about or had used.
My point in my original post, is that there are ways the front sight could go south on you, unexpectedly. And, implicitly, perhaps you could creatively think of something to do about it.
For instance, Could you design a shroud that goes around the front end of the sight in such a way that material could not get in the way of the two surfaces that control the height of the sight?
You seem to have taken my comments very negatively.
They were not intended that way, but merely to point out that there can be issues with adjustable front sites, and I have experienced them. It ain't pie in the sky stuff.
There is nothing quite like having a big mule deer buck staring back at you while you are fumbling around wondering how your sight got in the wrong position. Fortunately, it wasn't a charging cape buffalo.