Seeing a laser dot at any serious range is pretty much impossible, at least in my experience. There's also a lot of airborne material at shoots as multiple rounds impact the target/ground/etc. They consistently time slower than reflex sights, and sometimes even iron sights.
That's not considering the problem that in fog/dust, the beam is a "HERE I AM" arrow. Not a problem in competition though. But it underlies the primary use of lasers: IR beams with nightvision. THAT'S the golden ticket for lasers, and you can see where your buddies are aiming too. Now, if you're fighting someone else with nightvision . . hey, good thing we can choose who we fight, right guys? Guys?
But it does sound pretty much like having a laser on the gun no?