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

My next G30SF also had precision troubles as well as the WORST induce pull of ANY Glock I have ever owned, and I couldn't suitable it applying this setup no matter what I did and perfectly above 1,000 rounds of attempting to deal with it and “break in” the gun (which I have not had to do with any Glock before both).I am in fact planning to purc