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

My second G30SF also experienced accuracy concerns plus the WORST result in pull of ANY Glock I have at any time owned, and I couldn't suitable it using this set up whatever I did and perfectly in excess of 1,000 rounds of attempting to correct it and “crack in” the gun (which I have not needed to do with any Glock right before possibly).Probab