With the challenges of law enforcement and military in mind, trijicon hd night sights is a self-luminous three dot sight set which uses a tritium-phosphor lamp protected within an aluminum sleeve and capped with a sapphire jewel to evenly distribute light and protect from solvents and puncture.They have a metal body with a silicone rubber cushion for shock protection.The u-notched rear sight is angled and serrated to reduce glare, while the front sight has a tall blade.The protective clear coat resists powder residue and cleaning solvents to keep the color bright for years.This sight set is compatible with springfield xd and xd(m) models and has a green front with a yellow outline.Rear Color: Green w/Black OutlineType: Tritium Front/RearFrame Material: MetalFrame Color: BlackFirearm Fit: Springfield Armory XD, XD-M, and XD Mod. 2Style: 3 DotFront Material: Tritium/PaintRear Material: Tritium/PaintFront Color: Green w/Yellow OutlineFirearm Type: Handgun