How to make gun fire sound not stack if I fire it non-stop?

This script makes a gun fire sound play when I shoot.But the problem is, the sound stacks up and makes a horrible noise. I tried to add a wait(1) before stopping the sound and playing again but it didn't work.

local sound = script.Parent.Handle.Sound
if sound.IsPlaying then
	wait(1)
	sound:Stop()
	sound:Play()
   else
	sound:Play()
end

local sound = script.Parent.Handle.Sound
if sound.IsPlaying = true() then
	wait(1)
	sound:Stop()
	wait(0.5)
	sound:Play()
else
	sound:Play()

Try this.