Good Morning to you!

I have the one on the left, and the one I received is the one on the right!

So I assume that my -3 is the one on the left and -4 is on the right.

The one on the left looks Identical, with windage adjustment just like mine.

What is the best source for a complete sight set? I have seen blade replacement You-Tube videos, but that seem to be an adventure. Would prefer to replace the assy and then play with the spare.

Getting closer!!!

Danke,