Setting up a weapons light :
The first thing that comes to mind is recoil , and how one would go about countering such .
The one moving object , that could reek havoc internally is the battery . Contained by a spring at the front and rear , it hardly has enough force to stop the battery becoming a battering ram under recoil . And even if one were to stretch the springs , how long before they gave up from the pounding of say a shotgun ?
So the challenge is to stop the battery moving , to this end one would want to plug both ends of the flashlight so as to hold the battery in place , yet allow the flashlight to function .
If I had a lathe I would just turn up some plastic spacers , but since I dont , and most of you dont , we are going to do it the budget way . [ On the cheap and easy ]
Youl need a roll of tape , what I did was take a AAA battery , and wrap some tape around it sticky side out [ dont want to tape the battery ] and then continued sticky side in rolling up a slug that will fit inside the body of a flashlight .
I then measured the + spring on my pill and cut the slug to fit [ Button battery ] , make sure you cut to fit the battery you have or plan to use [ flat or button head ] ..
This plug will stop the forward movement of the battery yet allow contact .
Fit the pill + your new spacer to the body and test to make sure it works ok , if everything is ok , we then cut the rear spacer .
And Viola ! , if everything is cut to the correct length , you should now have a flashlight capable of handling recoil , and one that will function correctly .
Hope you enjoy !
Obviously with a lathe , one could do a much more professional job , ....