GLOCK 30 GEN 4 FOR DUMMIES

My next G30SF also had precision concerns along with the WORST result in pull of ANY Glock I've ever owned, And that i could NOT appropriate it making use of this setup regardless of what I did and well about one,000 rounds of wanting to correct it and “split in” the gun (which I haven't had to do with any Glock in advance of either).Which is b