What are you doing to your lights to get them to burn out so quickly? The L70 rating (the point at which they get to 70% output) for XML emitters is rated at 72,600 hours at 1.5A. That's a runtime of about 8 years if you ran it 24/7. Are you overdriving them or something?
Did a quick google search and found this old thread regarding them. It looks like you have 5 of the 6 DARPA lights that Rat mentioned in his post. He also mentions there were only 50 DEF-3D’s made.
https://www.candlepowerforums.com/threads/surefire-darpa-def2.378019/
These are apparently that...
I think what you're really after is a light that uses flat regulation versus the step down regulation most modern lights use to cheat on the ANSO FL-1 standard. Flat regulation being where the light pushes more power to the LED as the battery gets tired, to keep the output the same right up...
Was just looking around Surefire's website - it looks like the EDCL1-T and EDCL2-T have had their tailcaps updated to be flared slightly and incorporate a lanyard with lanyard ring. Has anyone seen one of these models in the wild?
Apparently we call non-flashlight people "Muggles"?
https://www.abc.net.au/news/2022-06-18/torch-nerds-obsessed-with-collecting-flashlights-international/101144940
I have a tube on Nyogel 760g for threads and a tube of Nyogel 7797Z for the O rings. I got them from Oveready back in the days when they stocked it about 10 years ago. Still got plenty left.
I'm an every day kind of guy and I prefer lights that have throw over flood. I EDC either an L1 or an EDCL1-T which both use the tactical 2 position tailcap switch, and I love it.
The reason I like throwier lights like these is that I use my flaslight as a tool to either light up objects at a...