THE DEFINITIVE GUIDE TO HOW DO I BUY A GOCK 30 GEN 4 ONLINE

I'm not sure if there is Substantially I can do to boost on it but, when there is I want some Suggestions from People of you who may have modified their pocket tanks. Other than night sights which can be an clear up grade within the normal glock sights. Many thanks in advance.Maybe a dumb dilemma, but may be the 30s as robust as one other versions