The x-ray3 day/night sights are the ideal sighting solution for carry sport or duty handguns.With a blacked-out rear sight combined with a high-contrast front sight the three-dot tritium system makes target acquisition fast and intuitive even in low-light conditions.Both sights are standard sig sauer sizes #6 front and square-notched #8 rear.Rear Color: Green w/Black OutlineType: Tritium Front/RearFrame Material: SteelFrame Color: BlackFirearm Fit: Sig SauerStyle: 3 DotFront Material: Tritium/PaintRear Material: Tritium/PaintFront Color: Green w/Green OutlineFirearm Type: Handgun