WHAT DOES HOW DO I BUY A GOCK 30 GEN 4 ONLINE MEAN?

I am undecided when there is Significantly I can do to boost on it but, when there is I want some Strategies from These of you who definitely have modified their pocket tanks. Other than night sights which is an apparent update with the typical glock sights. Many thanks beforehand.That is depending on owner-noted issues in the sooner G30SF versions