I thought AO was "Aespherical Optics", a means of keeping more of the sight picture in focus towards the edge of the objective.
Open to criticism
Ogri the trog
I thought AO was "Aespherical Optics", a means of keeping more of the sight picture in focus towards the edge of the objective.
Open to criticism
Ogri the trog
Improvise, Adapt & Overcome