I've been hesitant to post this because I suspect a number of "it's the slide lock." It's not, because it's doing this even with it removed.
My G3 Glock 26 is getting stuck at lock back. If I smack it in the back of the slid it will pop forward. If I sling shot it as hard as I possibly can it will usually go forward.
I have replaced every single part (except the locking block) one at a time to see if the issue is resolved. Recoil spring, slide release (in or out), striker, plunger, ejector housing, trigger, etc.
There is no apparent obvious wear or rub marks.
The gun is a few years old. I won it in GSSF and used it in sub-compact the last few years. I probably have 2-3 k through it. It had been my CCW until this.
You input is appreciated. Thanks.