Auto left mouse clicking software?

Hallo everybody,so in this thread i wanted to ask if there is any software (maybe just a script) that allows me to click very fast while i hold down the left mouse button(without having to tap it).Something like turbo button that some gamepads have.thanx in advance!(it's gonna be used for shooting fast weapons with autoloader ex.shotguns,snipers etc)

---------- Post added at 11:35 AM ---------- Previous post was at 10:52 AM ----------

SendMode Play
~*LButton::
loop
{
GetKeyState, LButtonState, LButton, P
GetKeyState, CapsState, CapsLock, T
if (LButtonState = "U") || (CapsState = "U")
{
break
}
else
{
send {click down}
sleep, 10
send {click up}
sleep, 30
}
}
Return


so here is the script it wasn't so difficult to figure out though.