My input, buy one of these https://www.aliexpress.com/item/32951600559.html?
Buy a good quality AA flashlight like a Lumintop tool and replace the led and mcpcb with this LG led mcpcb.
Will run off AA batterys and put out alot more mw’s running a 14500.
The older model tool was done here What did you mod today? - #2553 by Serp
I have built one using the newer 2.0 model. It has modes using the original driver.
The Ultratac A1 would also be a good host.