AmeriGlo Rear Only-Green Tritium Lamp single dot No Outline .316" H .150" Sq Notch. This Illuminated Night Sight from AmeriGlo Night Sights uses an incredibly bright Tritium material that will last for an incredibly long time without dimming or fading. The AmeriGlo Rear Tritium SIG/XD Pistol Sight is one of the most durable materials on the market so your weapon will be equipped with a long lasting and reliable aiming point that you can rely on. For an amazing way to make sure your weapon has one of the best rear sights the shooting industry has to offer choose the AmeriGlo Tritium SIG/XD Rear Sights. Specifications for AmeriGlo SIG/XD Tritium Rear Sights: Manufacturer: AmeriGlo Color: Black Rear Sight Color: Green Tritium Sight Style: Square-Notch Rear Blade Height: 0.316 in Width: 0.15 in Package Contents: AmeriGlo SIG/XD Tritium Rear Sights AmeriGlo SG-101R: Rear Only-Green Tritium Lamp single dot No Outline .316" H .150" Sq Notch