Careful with big lights and shorty tubes, as lots of them are meant to be used with high-drain 18650s, and sticking an 18350 in there with a shorty tube means you might try to be sucking down a bunch of amps that the anæmic 18350 will be screaming for mercy.
A light meant to be used with an 18350, or worse a 16340, should be designed to have lower maximums to avoid exactly that.
True true !
Second vote for Sofirn Sc21 Pro. It is small, takes 16340, and has onboard charging.
I think it is a great pocketable light!
3rd vote
great light
i only want 18650 energy capacity , but i like it anyway
have to charge it about 3 times as often as an 18650 light–or just use less brightness
other than that it is perfect
for me
YMMV
This is a non-comprehensive list of lights 95mm or shorter with a tail switch:
Parametrek