This was my very first thought when I handled this gun. It was almost impossible to release the slide with the slide lock. No need what so ever to have it recessed that deep. I did like the sights and didn't realize the ports were cut all the way around (internally) at that time. I am anxious to here more follow up on this. I carry a ported 9MM Shield and have never had an issue with flash or gasses.I believe in an actual self defense situation, you would not notice recoil,noise or muzzle flash and POSSIBLY the number of rounds you had fired.