A very amateur attempt at faking a rare M/70, that said there are also fakes out there that even the most advanced collector would have a hard time spotting. Back in the late 70's early 80's Winchester sold some M/70 tooling, amoungst the items were barrel roll marking dies. These found their way into the hands of unscrupulous individuals that used them to produce barrels in rare calibers that were hard to distinguish from originals. Fortunately the fakers are long gone but those rifles remain, therefor when considering a rare caliber M/70 provenance is of utmost importance. There were a couple of dealers with big reputations involved in this, fortunately only one remains and his reputation is pretty well known in the collecting community.