Discussion Starter · #1 ·
I have about 20k to 25k rounds thru my G17 Gen4 and the bottom front edge of the locking block has been worn (or chipped) down. It looks like someone filed exactly 1/8th of an inch off and sharpened the leading edge (from the bottom up). What type of malfunctions might this cause and at what point should it be replaced? I can feel vertical movement of the barrel up and down when the slide is locked back (more movement as compared to my other G17s.