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

I'm unsure if there is much I can perform to enhance on it but, if there is I would love some Suggestions from People of you which have modified their pocket tanks. Aside from evening sights which happens to be an clear upgrade through the common glock sights. Thanks in advance.I am essentially planning to buy a Gen4 G29/30 body right now to do par