The Idea
So, a rifle strap is a gun mod that can be applied to rifles, shotguns, machine guns and other similar weapons. When a rifle has a rifle strap on it, it’s volume is removed, as it isn’t in your inventory, but your torso gets encumbered by 1 or 2 points to simulate that the rifle is strapped over your back. You could strap two rifles on you, and each rifle gives you 1 or 2 torso encumberance. The rifle could be used as if it is in the inventory.
Crafting And Location
Rifle straps could be found in all the other places where gun mods and guns can be found.
The crafting recipe would require 1 fabrication, 1 firearms skill, and it would require 4 rags (for the strap itself) and 2 scrap metal (for the metal parts that get attached to the rifle), maybe some thread and a sewing kit.
(Maybe holsters could be used the same way?)
Thoughts?