Centra Iris Aperture 1.8 Performance

– Adjustable rear aperture with five (5) colour filters (C41 Blue, Grey,Yellow, Peach, and Brown) and a polarization filter.

– Front sight tunnel polarization filter insert.

– In combination this system produces optimal sight picture contrast and is infinitely variable for eyes, lighting and range conditions.

– Sight alignment clarity and contrast around the front sight tunnel in the rear sight remains bright and sharp