Half life of tritium is around 12 years.
Glockmeister is top notch, I'm sure they keep "fresh" sights in stock.
I install my own.
Glockmeister is top notch, I'm sure they keep "fresh" sights in stock.
I install my own.

Thank you all for reply.
mvician - did you use any special "rear-sight-tool"? Also, is there specific wrench required to mount front sight? Or maybe those are included as a kit?
Thanks!