These Sortie sights fit the Avenger perfectly. Ultra light weight set up (without the legs).
I would be interested in your choice of these sites as opposed to a scope . Perhaps a fixed power 4XThe rear sight is 3mm higher above bore cl then the front sight. This is at 25% elevation on rear. Should work, haven't tested yet, rain. I didn't like these sights on the Sortie, seemed too large. These are excellent sights and they sight much better being further apart on the Avenger
I like scopes also. A favorite is the Tasco 4x32 airgun scope. Braced for high recoil springers, comes with recoil proof rings. Nice and clear $55- +-. Iron sights are my favorite. Try an Appleseed shoot, it's designed for 10/22's, but a gauntlet or Avenger works. Iron sights on the Army down and dirty range targets. I like the illuminated Bug Buster alsoI would be interested in your choice of these sites as opposed to a scope . Perhaps a fixed power 4X