Referencing actors in local multiplayer

Hello everyone,
I’m a currently converting a single player game to include local multiplayer. I am having an issue with referencing the specific weapon in a certain players hands. At the moment I used “get all actors of class” to find the weapon in the players characters hands however this effects every version of that weapon in the game. Instead am looking for a way to reference just the weapon in that player characters hands.
If this makes sense and anyone can help/point me in the right direction it would be much appreciated.