I went shooting today and the P99 9mm AS shot great just plinking. No malfunctions. I would say i put about 100 rounds through it. Then i tried some tactical things like drawing from a holster and double tapping. In the middle of a full magazine, the slide locked back as if the mag was empty. I just racked the slide a little and kept shooting, it did it again around the 3rd shot of a new mag. its strange, its not a jam, its as if the gun thinks the mags empty lol. i think my grip is to blame, the thumb of my left hand may be hitting the slide stop because of the recoil, i figured this out on the way home. if you have had this happend then let me know. also i experienced this on my kimber .45 pro cdp so i think it is my grip.