Ideal for spotlighting possums of whatever you local vermin is. Uses a commonly available high output LED torch/flashlight and securely fastens it to the barrel.
This make the rifle fairly front heavy so I might end up going for a version 2 and mount it direct to the stock further back but we'll do some testing first.
I have included the drawing file if you want to alter the barrel dimensions - this barrel is 15mm diameter at the front and 17mm diameter at the hand end of the flashlight. The flashlight is 39mm diameter for it's entire length.
Print out one of each of the STL files, A is the front and B is the rear.
Use 2 x 4mm machine screws and nuts per clamp, total of 4.
Use firearms responsibly and check that "spotlighting" is permitted in your area.