Convoy S2 flashlight easy to reach bicycle mount

I wanted to be able to turn my Convoy S2 flashlight on very quickly without moving my hand from the handlebar. So I design this flashlight mount that places it underneath the handlebar close to the thumb.

It consists of two parts that are bolted together with M5x16 screw and a nut. A thread lock is needed to prevent it from unscrewing. 

The bracket requires two M3x30 screws and nuts.

I printed it without supports from ABS with 0.2 layer height.