I don't think you get any tools like a nut driver for the front. It's a 3/16" and you probably won't be able to use a hardware store type. Too thick. These are popular on Glock Talk. http://www.micro-tools.com/store/item_detail.aspx?ItemCode=26547 WPNS316060F
I think you can get them at Amazon too.
Everything I've heard is that the rear can be very tight and might need some adjustment. A sight pusher is recommended.
If you are experienced you could probably do it yourself. If not have a pro do it for you.
My XS big dot did come with a tool for the front sight to unscrew and a rubber mallet piece for the rear so it's not metal on metal nailing in the rear sight.
I however did return the big dots and just got warren competition front red F/O and rear sights today. Love them. Can't wait to try them tomorrow. -but they came with no tools. I was able to intsall the front with the tool from the big dots but brought the rears to my gunshop.
I just sent for a Ameriglo Rear Sight Tool For Glock from Amazon.com, price $105.03.
My understanding is that for the rear sight you will need a sight pusher and for the front sight a special nut driver.