i am trying to make a gun aouto fire but it wont stop how do i fix?

local qws = false
local mouse = game.Players.LocalPlayer:GetMouse()
script.Parent.Activated:Connect(function()
	
	while qws == false do
		local i = Instance.new("Part")
		i.Material = Enum.Material.Granite
		i.Parent = workspace
		i.Size = Vector3.new(1.38, 0.59, 0.4)
		i.Position = script.Parent.Handle.Position
		local s = Instance.new("BodyVelocity",i)
		s.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
		s.Velocity = mouse.Hit.LookVector *200
		
		wait()
		
		
		
	end
	
end) 
script.Parent.Deactivated:Connect(function()
--mouse.Button1Up:Connect(function()
			qws = false
		end)