I have a ruger p89. Never had any problems with the gun till yesterday. I was shooting and it locked up. I took the gun to a gun smith and he said my barrel had a bulge on the outside. He put it on a lathe and shaved it down a bit. He said it was safe, but I want to buy a new one so I don't have to worry about my wife shooting it (this is her home defense gun). Anybody know where to find a replacement barrel?