Trijicon Heavy Duty Night Sight Set Orange Front Outline Springfield XD-S. Trijicon designed these Pistol Parts with a taller blade on the front sight so that it's easier to see and acquire even in transitional lighting. The rear sight on this Trijicon Lightweight Pistol Sight Set is an outline version while the front sight is completely tritium. The paint outlines on both pieces of this Trijicon Illuminated Night Sight Set greatly enhance this setup's visibility. Also the sharp edges on these sights make it a great augmentation for competitive shooters. Install the Trijicon Military-Style Tritium Night Sight Set onto your pistol to quickly acquire targets with both eyes and remain on target while putting shots on target. Specifications for Trijicon Heavy Duty Night Sight Set Front Outline Springfield XD-S: Manufacturer: Trijicon Gun Make: Springfield Armory Gun Model: Springfield Armory XD-S Color: Orange Green Front Sight Color: Green w/ Orange Outline Rear Sight Color: Green w/Black Outline Fabric/Material: Metal Front Material: Tritium/Paint Gun Type: Pistol Attachment Type: Professional installation recommended. Front Blade Height: 0.2 in Rear Blade Height: 0.218 in Features of Trijicon Heavy Duty Night Sight Set Front Outline Springfield XD-S: Fits Springfield XD-S Series Package Contents: Trijicon Heavy Duty Night Sight Set Front Outline Springfield XD-S Fits Springfield XD-S Series.The HD Night Sights were specifically created to address the needs of tactical shooters. The three dot green tritium night sight sets front sight features a taller blade and an aiming point ringed in photoluminescent paint while the rear sight is outlined in black and features a wider U-shaped notch. This unique configuration increases visibility and quickens front sight acquisitioneven in transitional lighting. Additionally the front surface of the rear sight is steeply hooked to assist in emergency one-handed slide operation.Green tritium lamps are warranted for 12 years from date of manufacture.Professional installation recommended. Dimensions for reference only. Features/Specifications: Springfield