Holosun 507K and 507C, they are excellent for darkness
I actually had to grab a gun and go check things out last night, I grabbed my 507c equipped G19. I also grabbed a handheld flashlight and in total darkness, getting a proper presentation SHO wasn’t as easy as I thought it would be.
I intentionally bought plain black sights and now am thinking about going night sights to gain some sort of reference.
But to be fair, I’ve not been practicing SHO and now this pistol will have its own light attached.