Custom Diopter Lens to add to your existing 30mm front sight tube.

Threads compatible with other 30mm sights.

Lens options include either a negative diopter, or a custom cylindrical lens for astigmatism (specify when ordering).

Lenses are Anti Reflective coated optical grade polycarbonate.  AR coating assures a bright, high contrast image.  Optical grade polycarbonate is shatter resistant, and blocks UV light to decrease strain on eyes.

Lenses are mounted in metal frames, which screw in to a repeatable position in the sight tube.  This allows a lens frame to be removed from the sight tube for cleaning or storage, and re-inserted with minimal shift in your zero.  All lenses are ground co-axial with the lens center for minimum distortion.

All lens frames have female threads cut on front of frame, allowing a sunshade or lens cap to be screwed into the front of the lens frame.

Note.  Cylindrical lenses for astigmatism need to be oriented based on your prescription.  I cannot mount the lenses in the correct orientation, since I do not know how the lens frame will orient in your sight.  If you order a cylindrical lens, you will need to partially disassemble the lens frame once it arrives, and experiment with the lens orientation in the frame to achieve the correct orientation for you.  Custom lenses are non-returnable.

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