I have instructed many specialized courses specifically for Weapon mounted lasers on long guns, sub guns, semi auto pistols and yes J frames.
Weapon mounted lasers are tactically advantageous "accessories" for a competent shooter to have when understood and utilized properly.
While the greatest tactical advantage a laser offers is the ability to engage a target accurately from a position of cover that is not conducive to traditional sight alignment techniques it should also be noted that there are two key elements of the natural body alarm reaction during combat where lasers are beneficial.
The first is the individual will have both eyes open, the second is both eyes will be focused on the immediate threat as the human eye can only focus on one focal point at a time, hence the old saying "the front sight should be clear and the target should hazy".
Having the laser dot superimposed on the threat where the focus of both eyes will instinctively be creates one combined focal point to engage which is a distinct tactical advantage.
However, accurate engagement of a target with a perfectly zeroed laser only happens if the shooter is competent in regards to the basics of trigger control, sight alignment and sight picture which all lead back to iron sights.
Long story short is that lasers have advantages but do not replace the basic marksmanship skills learned with the old "reliable" iron sights that a shooter may have to rely on even with a laser present simply because iron sights don't wash out in bright sunlight or run out of battery life when "Murphy" shows up.
Weapon accessories (lights, lasers, red dots etc.) are only advantages to a shooter who is already proficient and accurate with the stock variant of the weapon they are using.
Happy 4Th stay safe
.
