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. Specifications for Night Fision Optic Height Fiber Sight Set: Manufacturer: Night Fision Color: Black Rear Sight Color: Blank Sight Style: OEM Height Fabric/Material: High Quality 4140 Steel Gun Type: Pistol Illumination Type: Tritium Illumination Color: Green Features of Night Fision Optic Height Fiber Sight Set Bright: Generously exposed fiber optic tube CNC machined out of high-quality steel 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 Package Contents: Night Fision Optic Height Fiber Sight Set Allen Wrench Which weapon models is Night Fision Optic Height Fiber Sight Set compatible with? Night Fision Optic Height Fiber Sight Set is compatible with Smith & Wesson M&P 9, Glock 19, Glock 17, Glock 45, Glock 48, Glock 49, SIG Sauer P320