WHERE CAN I BUY A GLOCK 30 ONLINE OPTIONS

I place a Tarran Tactical kit right into a gen three g23 and It is now super lite but I continue to couldn't strike nearly anything with it. My Mate could shoot it really well but I struggled. Eventually I improved the stock sights to a Dawson Precision Preset Competition Sight Set and now I do pretty good with it.Perhaps a dumb concern, but may be