A few days back I went into a local mom and pop gun shop, and mixed in with some sporter replacement stocks for military Mausers in a gun rack was a ML barrel. Of course I had to pick it up a have a look. A 39inch barrel apparently never used but with a few small patches of surface rust, with the following markings: Hopkins and Allen, Made in the USA, .50 cal, blackpowder only, Minuteman. Three dovetails on the botton and two on the top, and a threaded hole for a touch hole liner. Appears to be a slow twist. Shop owner would sell it for $30 and throw in a new breech plug (barrel is minus one at the moment). I sure could use this for a project. Anyone have any info or opinions on these barrels? Thanks in advance.