Noticed today while completing the Immobile patrol objective on Arma 3 - Survive portion of the singleplayer campaing a glitch/bug regarding the Kitpack MTP backback you can loot from the broken down hunter.

In short. You can duplicate items and on the first attempt the players body is glitched out (notice the second Kitbag backpack on the ground, one near the AAF Quadbike that I had looted from Camp Tempest on a prior patrol and second between the player characters legs at the ground).

It happened by moving the Kitbag onto the characters backpack slot which was occupied by a Field Pack (Olive) that AAF troopers normally have during campaing missions/patrols from the Quadbike to the player characters inventory's backpack slot (I.E. swapping the items).

The body glitching was fixed upon entering the vehicle until the player character dismounted it.

During all this, I had noticed that the Kitbag from the Quadbike had not moved onto my inventory's backpack slot, but it had still been occupied by a Kitbag and the Field Pack had been discarded onto the ground. So I put the Kitbag from my inventory to the Quadbike and it did not remove the original Kitbag. The game also allowed me to "Overload" the Quadbike even though it was already full.

The glitch/bug allowed for the Kitbag loadout to be swapped as well. Seems to be working infinitely

Picture of the large amount of Kitbags that the game lets the player choose from as the result.