HOW DO I BUY A GOCK 30 GEN 4 ONLINE FOR DUMMIES

I do pass up the remarkable sensation Gen4 grip and the slightly milder recoil from the thicker slide and barrel although the lighter weight and feel from the G30S for me over will make up for it...Potentially a dumb concern, but will be the 30s as potent as another variations of the 30 with regard to loading with very hot .45ACP rounds?I would lik