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

My second G30SF also experienced accuracy problems as well as WORST induce pull of ANY Glock I have at any time owned, And that i could NOT accurate it using this set up regardless of what I did and very well about 1,000 rounds of seeking to resolve it and “split in” the gun (which I haven't had to do with any Glock before both).I'm Effectively