Night Fision night sights offer a revolutionary new design that with brighter, more vivid, aiming dots. Like all night sights, Night Fision uses self-illuminating Tritium to get the "always on" glow that makes them so effective. Night Fision sights have 30% more Tritium than most sights on the market. The Tritium insert isnt surrounded by a painted-on ring, but rather one made of a daylight fluorescing material that produces optimum visibility in daylight. Night Fisions Optics Ready Stealth Series (ORS) sights are engineered to offer a lower 1/3 co-witness with your slide mounted red dot sight. As an alternative to repurposing Suppressor Height sights, ORS sights are designed from the dovetail up to work as back up sights for red dots, obscuring less of the optic window while still allowing three dot sight alignment if needed. Specifications for Night Fision Optics Ready Stealth Night Sight Set for Sig P365/507k: Manufacturer: Night Fision Gun Make: SIG Sauer Gun Model: SIG Sauer P365 Color: Black Sight Style: U-Notch Fabric/Material: CNC Machined Gun Type: Pistol Front Blade Height: 0.289 in Rear Blade Height: 0.287 in Size: One Size Illumination Type: Tritium Brightness Settings: 1 Condition: New Finish: Black Nitride Age Group: Adults Gender: Unisex Features of Night Fision Optics Ready Stealth Night Sight Set for Sig P365/507k Brightest Tritium sights on the market Rugged machined steel sight bodies serrated for reduction of glare Matte black Nitride finish - excellent wear- and corrosion-resistance Front rings available in yellow, orange, or black Designed for an approximate lower 1/3rd co-witness with a direct-mounted Holosun EPS/EPS Carry Compatible with Sig P365 and P320 Package Contents: Night Fision Optics Ready Stealth Night Sight Set for Sig P365/507k Allen Wrench