Meet the FT Bullseye: a micro-optic pistol sight that replaces the rear sight and eliminates the need for the front sight. This handgun sight works day and night and doesn’t require batteries. Simply center the dot in the circle, and you are on target.
The FT Bullseye has a low-profile design. It is available in red or green dot/circle version for Glock and Springfield XD models. More info is available here.