I have never understood the belief that lasers are somehow superior to open sights. Learn how to use sights and how to point shoot at extremely close ranges and you won't "need" a laser. Anything that relies on batteries will fail when you desperately need it to work. Trust me on that. It's really not that hard to use the sights. Lasers also have a tendency to suck bullets in your direction if your adversary is armed as well.
I think the lasers are a useful tool, and I got night sights on my gun as well.
Contrary to the above poster, my eyes are not nearly as good as they used to be. Without glass I can't even SEE the &^*% night sights worth diddly, let alone shoot them accurately.
I can't even shoot them that good with my glasses in broad daylight (wait till you get older and your eyes don't focus right anymore and then see how you feel).
That said I got two lasers, both Laser Max and both green. Green shows up better and I can target shoot in broad daylight with them. You still have to practice and that’s going to be done in daylight.
Both attach to the rail, you have to have that with a green laser as the battery will not last.
Not sure what the models are, but I use the battery powered one as the sight on the gun unless at the range. I shoot a couple of rounds when I put it back on to ensure its on. It uses batteries too fast for normal shooting (one session they are done)
The rechargeable one is for target shooting. I can get two range sessions out of a battery charge. Works well out to 25 yards except in real bright back light. then I just move it in closer (usually am at 10-15 yards anyway as that’s my max anticipated engagement distance.
the laser takes a bit getting used to as you have to offset above the gun or to the side (I go for above so I can naturally drop into the iron sights if the laser fails) I practice the iron sights as well.
I am willing to bet my life that I can aim and fire and kill the intruder while he is still trying to figure out what is going on. My shots will be center of whatever mass I can see.