How to make a handle for a custom gun

[neviquatro (nevi)]

Im trying to make a simplegun system but i dont know how to make a handle for it, I need a attachment for every guns handle so i dont need to script custom positions, but i dont know how to do it.
This is what im trying to do:

And i need it to like automatically change its position to the tip of the users hand.

I havent even tried to make this work since i literally have 0 clue how to even begin
R6

[WickdSuper (wicked)]

use tool grip editor, very easy and accessible to use

[IMG_TheBast]

Could you just create a part named “Handle” and weld it to the gun and connect it with a Motor6D (joint) to a hand?