I disagree. Night sights only glow enough to be useful when in a pitch black or very dimly-lit environment where there is virtually no light anywhere either in front or above/behind you. Walk into your yard at night time with no lights around, and sure, they'll glow and make you feel super "tacticool" as you slowly raise your gun up at that tree trunk in the middle of your yard to see the 3 green dots lining up. However, the vast majority of us are not nighttime operators stalking unsuspecting targets in the dark and taking them out while they're on watch duty and taking a pee or cigarette break. It's also risky to rely on lining up 3 glowing dots in a very dark environment without enough light available to see the silhouette of your entire slide because it's possible to misalign the dots and put the front dot to the left or right of the rear dots.
In the real world, you have to identify your target with a light or at the very least the area were your target is standing needs to be lit up enough with ambient light to still ID the target. This is true even if you happen to be shooting out of a dark room where your sights might be glowing as you look out into the lighted area. However, in that scenario, you don't really need the dots anymore as you now have the silhouette of your gun and sights to work with.
@waz0wski hit the nail on the head. With a WML, you simply don't need them.
They are an outdated concept and only limit your accuracy and speed in more realistic situations like day-time active shooter scenarios at schools, at the mall, at work, etc. Basically anywhere in public during the day. They also take the fun out of day-time range work as you are usually dealing with an overly wide front sight post and 2 rear dots competing for your focus (hint: you should be focused on that front sight). If you have to shoot at night, it's probably going to be in your home during a home invasion situation. In that case, again, you should have a WML bright enough to illuminate the entire room and ID your target and should be relying on the silhouette of your entire gun and not 3 dimly lit dots.
I prefer a plain black rear with fiber-optic front for most situations that I might find myself in. IMHO, they offer the best combination of speed, accuracy, and overall shooting enjoyment. I happen to run the same SightMeister CFO sights as mentioned above by user
@Grant435 on my USP .45. They are a newer offering to the market, but a really fantastic design! Highly recommend them if you're looking for a plain black rear w/ fiber-optic front.
Cheers!