My 2nd G30SF also had precision challenges plus the WORST set off pull of ANY Glock I've at any time owned, and I could NOT right it working with this set up no matter what I did and well over 1,000 rounds of wanting to resolve it and “break in” https://fernandoprqmj.spintheblog.com/33221760/the-glock-30-gen-4-diaries