I have a P89 9mm and I have fired it a few thousand times since I bought it, only had it hiccup once. This was more or less bad ammunition (bought cheap reloaded stuff). The only downside to my gun is it won't hit the broadside of a barn. I've had 4 or 5 guys that are all great pistol shots shoot this thing, and the general consensus is, the intruder better be within punching range to hit with this gun.