Need to randomize time for a AppleScript Autoclicker

As you can read from the title, I need to randomize the time between my auto clicker clicks.

My auto clicker uses AppleScript programming language. It is very basic, but I need it to be random and not constant.

What I have so far is:

on idle
    tell application "System Events"
        key code 12
    end tell
    return 0.5
end idle

I know, this would press q rather than click, but that's beside my question and I want it that way. What I really need to do is code my Mac auto clicker to be 115-170 milliseconds.

Thanks to anyone who responds!