Types of night sights

[CDR_Glock]

I would like to get night sights. Are there different types, grades, or variances in durability?

I have heard about sights that already "glow" but some need to be charged. Do these sights have a finite lifespan?

[8541/9999]

Night sights for a Glock Most are guranteed to last for 10 years at least my Trijicons are XS sights also make great sights