BenEzra
I could see how a traditional flashlight with a switch-on/switch-off switch could stick in the "on" position, but most quality tactical lights don't work that way.
They may not use the older sliding or toggled switches, but anything that moves can also potentially not move when it is supposed to, or move when not intended. There really is no such thing as a failsafe switching mechanism. I would agree that the current better quality lights are
unlikely to malfunction.
However I assess risks weighing
likelyhood against
consequences. And generally I do not consider low risks with potentially very high consequences as good choices. I am sometimes more likely to accept a high risk with very low consequences than a low risk with high consequences.
A flashlight used in conjuction with a handgun, handheld, makes very good sense to me. Techniques are simple, and in the event of a malfunction you can indeed just toss it.
I would argue that a mounted tactical light (not a conventional flashlight) on a long gun makes far more sense than assuming that (1) the HD gun will never be needed in poor light or with the power off, (2) the homeowner will always have far superior night vision than a violent intruder whose eyes may be ten or twenty years younger than the homeowner's, and/or (3) if the homeowner needs a light, he/she can hold it in their third hand.
IMO, having a mounted light doesn't obligate you to use it foolishly, and it does give you the option to use it if you really and truly need it.
Low light is a variable in itself in that there is low light and there is
no light, and in between in fractions. And it may vary from one location to the next relative to the defender's position at any time. What the defender can, should and should not do depends on exactly how much light there is in any specific circumstance.
When it comes to identifying a target and possibly actual shooting, before you switch on, you have to have a good idea where your target is to begin with. Otherwise fishing with your light is going to severely increase your exposure.
The crux of the matter is that once the defender switches on, his or her presence and position is potentially marked, and there may be more than one intruder - not necessarily in close proximity to each other. Even a single intruder may be using concealment that may render your light ineffective at the crucial moment, and making you a sitting duck for them.
The bottom line is that any light, handheld or mounted should be used only when absolutely necessary. A stealth approach to handling intruders is the best general tactic IMO; using the five senses, as little movement as possible, and moving very slowly.
Low light shooting is a useful skill, and not that hard to master at closer distances.
If you can afford a high quality light, the leap to a lower priced night optic is worth thinking about if you have a good sized yard or property. Not a night sight, but one of the handheld night viewing scopes. The cheapest are good for 100 yards or so, and used carefully they may have utility inside a dwelling as well.
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Je Suis Prest