How to fix Double Click Fire and more than 0.0001 Fire Rate?

I want to prevent a gun from being able to be clicked twice to spend more bullets than needed and to make the FireRate able to be more than 0.0001 when firing.

	Mouse.Button1Down:connect(function()
		if DB==true and Ammo.Value > 0 and Jammed==false and Lid==true and Safety==false and Character.Humanoid.Health > 0 and Mouse_Held==false and Sprinting == false then
			Mouse_Held = true
			while true do
				Can_Shoot = false
				Delay(0, function()
					local t = math.min(Settings.FireMouseAnimTime/3, Settings.FireRate/3)
					if not Aiming then
						Mouse.Icon = Settings.Icons.Fire1
					end
					wait(t)
					if not Aiming then
						if Reloading then return end
						Mouse.Icon = Settings.Icons.Fire2
					end
					wait(t)
					if not Aiming then
						if Reloading then return end
						Mouse.Icon = Settings.Icons.Fire3
					end
					wait(t)
					if not Aiming then
						if Reloading then return end
						Mouse.Icon = Settings.Icons.Idle
					end
				end)
				if Settings.Smoke then
					for i, v in pairs(Settings.Smokes) do
						local s = v[1]:Clone()
						s.Parent = Settings.SmokePart
						s.Enabled = true
						game.Debris:AddItem(s, v[2])
						if v[3] then
							Delay(v[3], function()
								s.Enabled = false
							end)
						end
					end
				end
				for _ = 1, Settings.Bullets do
					pcall(function() Fire(Mouse) end)
				end
				if Settings.Automatic == true then
				Camera.CoordinateFrame = CFrame.new(Camera.Focus.p) * (Camera.CoordinateFrame - Camera.CoordinateFrame.p) * CFrame.Angles(0.018, 0, 0) * CFrame.new(0, 0, (Camera.Focus.p - Camera.CoordinateFrame.p).magnitude)
				else				
				Camera.CoordinateFrame = CFrame.new(Camera.Focus.p) * (Camera.CoordinateFrame - Camera.CoordinateFrame.p) * CFrame.Angles(0.026, 0, 0) * CFrame.new(0, 0, (Camera.Focus.p - Camera.CoordinateFrame.p).magnitude)	
				end				
				Ammo.Value = Ammo.Value - 1
				if Settings.Automatic == true then
				Tool.Burst.Value = Tool.Burst.Value - 1
				end
				if Tool.Burst.Value == 1 then
				BurstReset()
				end
				wait(60 / Settings.FireRate)
				Camera.CoordinateFrame = CFrame.new(Camera.Focus.p) * (Camera.CoordinateFrame - Camera.CoordinateFrame.p) * CFrame.Angles(-0.012, 0, 0) * CFrame.new(0, 0, (Camera.Focus.p - Camera.CoordinateFrame.p).magnitude)
				if not Settings.Automatic or Ammo.Value <= 0 or Character.Humanoid.Health <= 0 or not Mouse_Held then
					break
				end
			end
			Can_Shoot = true
		elseif Can_Shoot and Character.Humanoid.Health > 0 and Tool.Handle:FindFirstChild("Click") then
		end
	end)