You are getting the basic concept. Its best to use the light sparingly, and if possible to move- even if just a little bit- after flashing. Most people use a weapon light in the way one would use a flashlight looking for the family cat in the yard, or as an aid to navigation- because they haven't been properly trained.
I've been using these lights for quite a while (ever since the Glock 21 came out with rails, maybe 20 - 30 years ?) and have thought about it a bit. In fact it was the fact that the 21 could take a light that finally switched me from 1911's to Glocks (I've now moved on to Sig)
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