I had one about 15 years ago and wore it out in a year shooting skeet and trap.I had the mag tube replaced because the gas piston rides up and down inside the tube and a year later it was worn out again.If I were you for the money it will cost to get another barrel you would better of putting it into another gun.I'm not saying that the Winchester dosen't work good but if you use it alot they just don't last like a Berretta or Remington semi.
