Millet Buck Gold 4-16x 50 Side Focus Illuminated Multi Coat Rifle Scope Variable power from 4 to 16 times magnification with a large light gathering 50mm objective lens Mil-DotBar system functions as a standard Mil-Dot with the addition of a thin line for easier alignment Adjustable green illumination with 10 brightness settings for precision in varied lighting conditions 30mm tube with matte black finish 100% quality materials used and tested extensively Variable power from 4 to 16 times magnification with a large light gathering 50mm objective lens Fully multi-coated optics for bright images Mil-DotBar system functions as a standard Mil-Dot with the addition of a thin line for easier alignment Adjustable green illumination with 10 brightness settings for precision in varied lighting conditions 30mm tube with matte black finish