Sending my slide for my m and p out to get a burris red dot installed. There is an option to have the suppressor sight before the red dot or after the red dot...anyone have any experience on which is better? Seems like most have the rear sight before the red dot but when i called the smith who does this he suggested the sights after the red dot. Any thoughts or experience? Supposedly doing them after gives a more unobstructed view of the red dot, does make sense to me.