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

My second G30SF also had accuracy concerns as well as the WORST bring about pull of ANY Glock I have ever owned, And that i could NOT proper it working with this setup no matter what I did and perfectly more than 1,000 rounds of attempting to fix it and “split in” the gun (which I haven't needed to do with any Glock ahead of either).I will not