Wow, I’ve been here a long time and fairly active (mostly posting inane drivel rather than the cool stuff everyone else is doing), I think this is the first time I’ve seen that Arc light which appears to be 2AA?!
Thanks for posting that! I do agree the mild “flat diamond” knurling is excellent.
Just a clean, simple and refined look , I think.
Arc made quite a few " Lego" battery tubes, in a few different body shapes for the LS.. A single AA and a dual AA . Double AA came in a twisty version and a Kroll clicky version.
Then there were the modders versions… Blackbird 22, MOFO and a few I can’t remember the forum monikers for . CR2, CR123 and a N-cell , amongst others.
Still keep and use a LSL-P with a AA tube at my work desk.