Artpro trigger overtravel is after the sear has broken the amount of travel the trigger has until it comes to a stop. It is a good thing to address as it helps with stringing of your shots horizontally on a target. My device goes in and replaces the grip screw and allows the tail of the trigger to be raised to degrease "creep" or the amount of pre-travel before the hammer falls.
Thank you for your interest
Jamie