How do I make this rapid fire with UristMcSpark's pistol?

I want to try making the gun script, automatic (rapid). But the problem is I don't know how to trigger it properly. Look down for examples.

Here's an brief-example of what I did so far:

mouse.Button1Down:connect(function()
    mouse.Button1Up:connect(function()
        game.ReplicatedStorage.ROBLOX_PistolFireEvent:FireServer(mouse.Hit.p)
    end)

Then here's my next one, it works fine but it shoots not automatic but pistol type. Where you have to spam click.

mouse.Button1Down:connect(function()
        game.ReplicatedStorage.ROBLOX_PistolFireEvent:FireServer(mouse.Hit.p)
    end)

Final one suggested by a user for help, it didnt work:

local shooting = false
mouse.Button1Down:connect(function()
        shooting = true
end)
mouse.Button1Up:connect(function()
        shooting = false
end)
while shooting do 
    if shooting == true then
        game.ReplicatedStorage.ROBLOX_PistolFireEvent:FireServer(mouse.Hit.p)
        wait(.2) -- time in between shots
    end
end

For the final suggestion, I didnt get what he told me to do: - Just add a debouncer that shows if the mouse is down or not then add a loop that says if the thing is shooting then shoot -

I had to use UristMcSpark pistol because I'm not familar with gun-scripting, rather than GUI scripting.