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

I do pass up the outstanding emotion Gen4 grip and The marginally milder recoil with the thicker slide and barrel however the lighter fat and come to feel with the G30S for me much more than will make up for it...Probably a dumb concern, but will be the 30s as strong as one other variations in the 30 in terms of loading with hot .45ACP rounds?See c