[Junky]

I just purhcased a new stock replacement hop-up rubber for my KWA glock 19, Aswell as a tight-bore barrel.

I installed the new items and although i noticed a difference in velocity from the barrel the consistancy of my shots is horrible! Is this due to the new hop-up???? i am assuming they need to be "broken in" .... i have only put thru about 60 rounds since i replaced it. ???????

is this true or should i just get a new one again??