• Adjustable rear aperture with five (5) color filters (C41 Blue, Grey,Yellow, Peach, and Brown) and a polarization filter.
• Front sight globe polarization filter insert for tunnel M18.
• 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 globe in the rear sight remains bright and sharp.
• Polished colored glass filters

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