How do I make this so that whenever a person enters, they receive a weapon?

function onPlayerAdded(players)
    for -- I don't know what else to do?
game.Lighting[script.Parent.Name]:Clone().Parent = players[i].Backpack
game.Lighting[script.Parent.Name]:Clone().Parent = players[i].StarterGear

    end
    end

It's not in starter pack because I made a GUI where when you press a textbutton with a weapon's name on it, it will generate that weapon and put it in everyone's backpack and startergear. But I want it so that when other people join the server, they get the weapons as well.

Here's the script that generates a weapon when someone clicks the GUI, for some reason for i,v players do doesn't give the players a weapon, it only gives whoever clicks the GUI a weapon

script.Parent.MouseButton1Click:connect(function()  
local players = game.Players:GetChildren()
for i = 1, #players do
game.Lighting[script.Parent.Name]:Clone().Parent = players[i].Backpack
game.Lighting[script.Parent.Name]:Clone().Parent = players[i].StarterGear
onPlayerAdded()


end
end)