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

I'm undecided when there is Considerably I can perform to improve on it but, if there is I would love some Suggestions from those of you who have modified their pocket tanks. Aside from night sights and that is an evident upgrade from your standard glock sights. Many thanks upfront.Not surprisingly you can find the KKM 10mm conversion barrel and th