Perfect Dot Tritium Night Sights For GlockA(R) - Glock 17/19/33/46 Orange Front & Black Square Notch Rear

Night Fision's Perfect Dot night sights for GlockA(R) pistols offer a revolutionary new design that with brighter, more vivid, aiming dots. Like all night sights, Perfect Dots use self-illuminating Tritium to get the "always on" glow that makes them so effective. The difference is PDs have 30% more Tritium, so they are unusually bright. The Tritium insert isn't surrounded by a painted-on ring, but rather one made of a daylight fluorescing material that produces optimum visibility in daylight. Th