A guy asked me to look at his SKS. I forget what he said happened to the barrel, but, something happened to the barrel toward the muzzle end. He told me he and someone had taken approximately three inches of barrel off (probably including the flashhider) at a machine shop. It has been cut straight and re-crowned from what I can see, it just doesn't have a front sight now.
He says that now it's not cycling. Made me think that it might not be getting enough gas to the bolt rod now. Could this be a problem with too small of a gas port? In other words, since the barrel is now shorter, does the gas port need to be slightly enlarged? This was my first thought, but I thought I'd see if you folks could tell me whether or not I'm on track before I start taking it apart.