Originally Posted by Fourbits
I Called Glock and the tech rep said some G17 gen 4's had the wrong recoil spring installed on initial assembly! He said he'd put a new recoil spring in the mail.
Just in case, check to make sure the spring is seated all the way, sometimes if its not seated it will stick out the front or bind. If you shoot it like that it will break the spring. So just check to make sure its seated all the way down in the semi circle that its supposed to sit in.