How to Make an Automatic Gun Using ROBLOX's RayCasting Script?

Well you can just do Button1Down etc like so

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

local mouseDown = false
local canPlay = true

mouse.Button1Down:Connect(function()
	mouseDown = true
end)

mouse.Button1Up:Connect(function()
	mouseDown = false
end)

while true do

	if mouseDown then
		if canPlay then
			canPlay = false
			--Put your code stuff here
			canPlay = true
		end
	end
end

Hope it helped :D If it helped please mark it as answered