Sipik SK-68 with the multi-AA battery tube extension, but that's going to be a very pencil-beam thrower.
A possible option is the Fandy-Fire Rook, which looks interesting (I don't have one) but it has to be driven from 14500s to really shine. It looks like a reflector close to a C8 and will run from AA cells and 14500s, but is underdriven on AAs.
This SAiK SA-305 is definitely a thrower with a focused beam. I had one briefly but sold it as I really didn't care for the form factor, plastic reflector, and next-mode memory. An emitter replacement and a driver update would probably make it a lot better light: https://budgetlightforum.com/t/-/9376; and Old-Lumens mod of thi slight here: https://budgetlightforum.com/t/-/9421