Was just messing with some stuff in the back and had a thought, I think this thread is haunting my brain... We've discussed how LEDs just look a little unnatural and disorienting to some of our eyes. While I'm not racing to put any on my truck, there are a few applications where that blinding quality might not be such a bad thing...
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This light is nothing fancy by today's standards, but I like it quite a bit. An old HK UTL, designed specifically for their USP pistols. Originally used a Xenon bulb, but Insight (the company who built them for HK) later released an LED conversion kit that came with a different bezel and the LED module. Raised output to around 120 lumens from the original 90, and gave you about 10X the battery life. I can tell you from my experience playing with it off of the gun, you do not want to look right at it!
Just thought I'd post it up since we were talking about older stuff, both the light and the LED conversion kit have been out of production for a couple years now. I bought mine as a police trade in for about $75 years and years ago, I see them going for upwards of $150 used now.