HOW DO I BUY A GOCK 30 GEN 4 ONLINE THINGS TO KNOW BEFORE YOU BUY

I place a Tarran Tactical kit into a gen three g23 and It truly is now super lite but I even now couldn't hit anything at all with it. My Buddy could shoot it rather well but I struggled. Eventually I changed the inventory sights to some Dawson Precision Preset Level of competition Sight Set and now I do very good with it.That's according to owner-