Situation
In Conflict, there is a loophole which allows a player ("the Exploiter") to equip an enemy Personal Belongings item and then turn it in to an Arsenal for rank experience infinitely. It requires a second player to assist in the exploit ("the Assistant"), an enemy Personal Belongings item, and a friendly arsenal.
Execution
The Assistant knocks the Exploiter unconscious.
The Assistant searches the Exploiter's inventory and removes their Personal Belongings item.
The Assistant helps bring the Exploiter back to consciousness.
The Exploiter, now conscious, equips any enemy Personal Belongings item into their own empty slot.
The Exploiter opens any friendly Arsenal and attempts to exchange the equipped Personal Belongings item.
The Exploiter receives rank experience for exchanging the item, but the item is not removed from their slot because it cannot be unequipped.
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I will provide footage of the exploit if need be. This was demonstrated to me in an Official server, and the person who demonstrated it stated that another player showed him; thus, it is possible that you know of this issue and this is a copy of an existing reported issue.