Finally took the Kel-Tec PF9 that I got from my brother to the range last week. Horrible experience. The first two shots, the magazine release engaged, preventing the cycling of the next round. This was very annoying. The gun is very little to begin with, so I have to completely alter the way that I held the gun. It was a very snappy gun to begin with, but after I altered the position of my hands to compensate for the mag release I lost a lot of control of the gun. This made it snap a lot worse, and effected my accuracy. I dont know what happened psychologically, but after a couple of magazines I realized I was jerking the trigger simply to shoot quickly. After that I began to methodically pull the trigger very slowly. This is when something weird happened. After I began pulling the trigger back half way my entire left arm (I shoot left handed) started to shake. I could not stop it the rest of the time unless I hurried my shots. Further into the shooting, at about 60 rounds the assembly pin broke.