Hello, I have a friend who has a Smith and Wesson 686 which had a Leupold scope mounted to it. He removed the scope and wanted to switch back to the stock rear sight. The problem is he can no longer findthe rear sight. Does anyone know where I can find a new or rear sight at a reasonable price. A part number would also help. I'm not sure if barrel length matters, but it has a longer barrel for hunting.

Thanks for your help,

Steve