It looks like a Gen 5 to me. See post #10 in this thread: https://www.candlepowerforums.com/threads/the-surefire-l1-evolution.151425/.
Nice light. I would write directly to a modder like SkyLumen and see what they have to say.
When I first started reading CPF, there was one member who suggested that, in his experience, a light in the 7 to 10 lumen range was the most practical and useful for EDC. This was long before the day of HDS Rotaries and Anduril 2 lights. A light that is too bright for a particular purpose can...
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