I would make one comment about this..
Assuming "ears" means the rear sight blade, the front sight level with the top of the rear sight is not the sight picture I use for long range shooting.
Close range, yes, but not long range, where I hold the front sight up, above the rear sight, with my target on top of the front sight.
elevation: (the top of the front sight exactly level with the rear sight ears).
Assuming "ears" means the rear sight blade, the front sight level with the top of the rear sight is not the sight picture I use for long range shooting.
Close range, yes, but not long range, where I hold the front sight up, above the rear sight, with my target on top of the front sight.