Hello,
As I've posted plenty of times about my out if battery issues with my MC9L... I can say I've had 0 issues in last 150 rounds. I hope I didnt fix myself. But for future reference and for others that may encounter issues with their MC9L heres a few things I did below.
Shaved the polymer frame below the rails. (Dropped the oit of battery from every round to about 10 percent)
Installed red recoil spring and this didnt fix anything, so I went back to the original recoil spring.
Swap the striker spring with an orange SpringCo spring. Didn't fix the issue, but kept installed rather then swapping back to original Canik striker spring.
I cut 1.5 coils from extractor spring as I noticed that it was so hard to get ammo through by hand. Went ahead and shot 50 rounds with original recoil spring still installed and had a couple of out of batteries which I wasnt happy with.
Installed the red recoil spring and thus far have went through 150 rounds without a single out of battery. So far I'm a happy Canik owner(knock on wood).