This is the prior thread mentioned.
However, after fiddling with the gun myself I found a very simple and easy way to fix this other than what was suggested in the linked thread.
When the slide is stuck about 1/2" to the rear of the frame, and the slide stop won't budge...
Insert a narrow flathead screwdriver up the empty magwell so that the head fits between the slidestop and front of magwell. You may need a small flashlight to see inside the magwell cavity. You see, the slide stop is straddling the top of the magwell when the slide is stuck in this position.
With the screwdriver head wedged in the small gap between slide stop and front of magwell (which is the polymer frame), push the screwdriver handle toward the FRONT of the gun (thereby pushing the screwdriver head rearward).
AT THE SAME TIME, push the entire slide rearward with your other hand as you push forward with the screwdriver handle.
The slide, then, will free itself from the locked position and you can now remove the slide stop from the frame with ease. After that the slide will come right off as you pull the trigger.
I hope this helps those new to Kahrs to avoid damaging your gun.