Glock Talk banner

G17 Gen4 Locking Block

7447 Views 3 Replies 2 Participants Last post by  JR
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.
1 - 2 of 4 Posts
I dont think you need to worry. Has the gun failed?
Vertical movement is common even when the gun is locked up. Push down on the barrel hood and see for yourself.
Change it out if it makes you feel better. If you do, let us know how it performs, for better or for worse?
1 - 2 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.