Reasons for Having a Pistol Light
There's a good likelihood that if you find yourself self-defense with a handgun, it's happening at night. Many different forms of crimes peak between 8 and 10 PM, which makes sense.
The statement "be sure of your target and what is behind it" is one of the fundamental gun safety guidelines. A light source is essential to observe targets when it's dark or gloomy.
You might probably also think of situations in which pistol lights would be advantageous tactically. Controlling when a room is lit up could be useful if an intruder enters your house at night in a place they are unfamiliar with. By switching from total darkness to a bright light beaming straight at the attacker, you also have the potential to momentarily "blind" them.
What to Take Into Account When Choosing a Pistol Light
The most obvious factor to take into account is if a certain light will fit your pistol. This normally isn't a problem, but subcompact pistols that you would carry covertly might only operate with smaller lights made for them.
The entire amount of visible light output by a light source is expressed in lumens. Lumens can be used to contrast how to light certain products are.