Bright: Generously exposed fiber optic tube CNC machined out of high-quality steel Black Nitride coated for improved wear & corrosion resistance Green or red fiber-optic tubes available Available in standard or optic-height Designed for an approximate lower 1/3rd co-witness with Trijicon RMR & SRO, Holosun 507c & 508t, along with other similar-height optics on the market Night Fision fiber optic sights utilize fiber optic rods to provide a bright, easy-to-see aiming point. The front sight design allows for the generous gathering of ambient light, and the sights feature a blacked-out rear for instinctive front-sight-focused shooting. All Night Fision fiber optic sights feature serrations on both front and rear for optimal glare reduction. The fiber optic sights are available in two different height configurations: standard (OEM) height and optics-height. The standard height offerings are meant to be an OEM-height replacement for your existing sights, or are factory-height for your new build. The Optics Ready height are designed to offer a lower 1/3rd co-witness when paired with select pistol mounted red dots on the market.