Originally Posted by lbwar15
nope. Because common seance tells me it doesn't work to well so iv never tried. I never said anything about using it that way.
"Common sense" is wrong. Standard setup for our entire agency is some form of a red dot sight and a mounted light. We use several different ones, all have adjustable brightness. Neither myself nor any of the guys I work with have ever experienced anything remotely like what you are talking about with or without the mounted flashlight engaged.
The flashlight affects night vision WAY more than the red dot when it's properly adjusted. What IS basically impossible is getting any kind of sight picture at all with iron sights in low light. Unless you are backlit. In which case you are also a silhouette.