How do you make it so every kill you get it changes your gun to a random gun

hi i want to make a gun game and i got most of the mechanics down i just cant figger out how to make it switch your gun every kill

Lifecycle(knocks out)~> item granter(s) to remove all possible weapons you can obtain by making it grant the selected item -1
And a randomizer that will go to item granters, granting you a random item

Welcome to the forums @coolcon_6 !