There is only 1 Glock tool you need to purchase. It has the pin punch to tear your Glock down only as far as you will ever need to. You can find it at any Glock website store for about $10. If you plan on carrying this weapon concealed, then steer clear of the drop in trigger mods to decrease the trigger pull force. I know several people that have made that mistake and luckily haven't shot themselves or anyone else by having an accidental discharge due to their new hair trigger job. You have good taste and a fine weapon with many varieties of holsters, springs, guide rods, etc... The best thing to do is practice, practice, practice! If something doesn't feel right, then you can modify what you need to enhance your grip, sights or accuracy. Congrats and remember not to put anything in front of the barrel that you don't intend to destroy! ENJOY!!!