I’ve used Tooltech 5-6x now, over the years. They do awesome work on night sight installs for Beretta 92 models. They replace the rear sight, and drill the front and add a tritium vial.
Their wait time is a little longer now - used to be 2 weeks from shipping out til you got it back at your door. This time it was a month. I called them and they told me they had a ton of Beretta slides to do.
Anyway - here’s a pic of my Beretta 92 Trident I got a couple months back with the night sights
And for those that have never seen a 92 with nightsights installed - here’s a pic I took a while back of a different 92 I have with night sights installed:
Tooltech is great. I’ve used them twice now. Second time was for an old trade in police slide that had dead 3 dot tritiums. They replaced the front tritium and installed a plain black rear that i included with the slide and requested they install.