Trijicon RMR 13 MOA Dual-Illuminated Amber Dot Sight 13 MOA DUAL-ILLUMINATED RMR: Tritium-phosphor lamp illuminates reticle in low-light conditions and fiber optics automatically adjust the brightness level and contrast to available light conditions UNIQUE PATENTED HOUSING SHAPE: Forged 7075-T6 aircraft aluminum-alloy housing shape diverts the force of an impact away from the lens, greatly increasing the durability of the sight TRUE-COLOR MULTI-COATED LENS: Creates a wide-band light transmission for minimal change in target area color ADJUSTABLE WINDAGE / ELEVATION: Easily adjustable without special tools. 1 MOA per click VERSATILE SIGHT: Multiple primary applications including rifle, pistol, shotgun and carbine, or use as a secondary sight with a magnified optic