Destroy attached weapon (swap weapon multiplayer)

Hi guys,would you help me out?
When I choose a weapon it could attach to the players hand etc,but when I choose a weapon with another player It destroy it and he got it. (see below on the picture)
I used the steam multiplayer tutorial by epic!

How can I destroy the attached weapon from the “actual” character and attach the new selected weapon?
Its in the lobby game mode and run on the server,“get controlled pawn” is from the lobby “player controller” “self reference”.