The first link he posted is the version two of the flashlight add on OP was talking about. It even has the model OP wants.
Yeah I had forgotten about the second one.
It'll work but the model doesn't really look like a flashlight. I'm sure it could be better.
But unless anyone makes a better one it'll do.
Edit: so I tried the other one, and it seems kind of weird and buggy, the beam will stick to blocks for a while and not flow nicely. So could someone tell me how to use the model in the old weapon_flashlight?