Have you cleaned the striker, junk can get in there and cause issues. Also make sure the channel is bone dry, if you get oil in there it can cause the striker to 'pump' also referred to as 'hydraulic' The fluid causes a suction that reduces the energy of the striker (that's why they have vented 'maritime' striker cups for guns used in water)
I would disassemble the slide and give it a clean, maybe some debris has built up on the striker assembly/channel. Was it purchased new? Has it been modified in any way? Are you using reloaded ammunition?
If you need help with the detailed strip check out this video:
Do you run a light on it?
I wonder why it looks that bad so soon. I bought the gun brand new and it has seen at most 1k rounds.
What kind of ammo? I have aftermarket strikers in 2 of my Glocks, I have only had primer striking problems with Wolf reloaded ammo. Never with factory loads
I believe its too late to go back to factory loads now to see if they work because that stirker is already cooked, so hard primers could have caused the damage and now you have light strikes on all ammo with it
Did Glock give it to you?



























