I'm in the process of removing my barrel so I can continue with my AMD-63 rivet build. I was able to remove the barrel pin fairly easily with my 5'' bench vise and a 1/4'' srew by pushing it threw. But, this is where I'm stuck. I secured the trunnion horizontally in my vice and used some thin scrap metal on the sides of the trunnion to keep the trunnion from getting marred. Then, I got a really big bolt and placed a nickel on the opening of the barrel and pounded away. I really hit this thing hard and have hit it pretty hard a number of times. The barrel won't move at all! I have hit it hard so many times that I've expanded the nickel to the point where I had to replace it with another one. I've been hitting it so hard that I'm moving the trunnion while its clammped down in the vice. Initially the trunnion was secured tight enough in the clamp and it would move a little. But, I was able to clamp it down a little more so that it wouldn't move. In the pictures I've seen people removing their barrels by hammering it out, they've got it secure perpendicular to the jaws of their vice. Is this the best approach to hammering it out? If so, how exactly do you secure the trunnion without clamping on the barrel too? On Hcpookie's site it looks like the trunnion is sitting on top of the jaws and you hammer down. (http://pookieweb.dyndns.org:61129/AK/pressing/DSCN3175.JPG) However, the jaws would need to be clamped down so that the trunnion doesn't move, but not too tight or the barrel won't come out and or get scraped. Any suggestions in the method I am trying?