UF-15 Fasttech Should Mate to DST

This should work with the Defiant Super Thrower to make it a 26650 Torch

http://www.fasttech.com/products/1/10005206/1412110-ultrafire-lzz-f15-cree-xm-l-u2-5-mode-700-lumen

Ya think so??? How can you tell? I’m interested but looks like too nice of a light just for the tube/switch etc. Anything less expensive like around $8.00 maybe? Would really like to make mine a stubby.