Don't know how much you will pay for that barrel, but unless your just hooked on using that gun, I would look into the H & R Ultra Slug Hunter rifles. If you don't have an eversion to single shots, that entire rifle will probably not cost much more, if anymore, than the barrel your looking for. I have also not found any factory shotgun setup that shoots anymore accurately than my H & R Ultra Slug Hunter, and I have tried many. Here in Idaho the late season whitetail hunt sometimes requires a shot quite a bit greater than 100 yards, and this gun is just the ticket. Not positive about left handed versions though, you may have to contact them and see. I looked up the website before replying to your thread, and they didn't make it obvious whether or not getting one in lefty is possible. Good Luck either way.